The Roman emperor was the ruler and monarchical head of state of the Roman Empire , starting with the granting of the title augustus to Octavian in 27 BC. The term emperor is a modern convention, and did not exist as such during the Empire. When a given Roman is described as becoming emperor in English, it generally reflects his accession as augustus , and later as basileus . Another title used was imperator , originally a military honorific, and caesar , originally a cognomen . Early emperors also used the title princeps ('first one') alongside other Republican titles, notably consul and pontifex maximus .
140-501: Honorius (9 September 384 – 15 August 423) was Roman emperor from 393 to 423. He was the younger son of emperor Theodosius I and his first wife Aelia Flaccilla . After the death of Theodosius in 395, Honorius, under the regency of Stilicho , ruled the western half of the empire while his brother Arcadius ruled the eastern half. His reign over the Western Roman Empire was notably precarious and chaotic. In 410, Rome
280-638: A revolt which lasted for two years (397–398). Stilicho eventually subdued it through the local command of Mascezel , Gildo's brother. The next crisis was the Visigothic invasion of Italy in 402 under the command of their king, Alaric. Stilicho was absent in Raetia in the latter months of 401, when Alaric, who was also the Eastern Empire's magister militum in Illyricum , suddenly marched with
420-608: A theocracy . According to George Ostrogorsky , "the absolute power of the Roman emperor was further increased with the advent of Christian ideas". This became more evident after the Muslim conquests of the 7th century, which gave Byzantine imperialism a new sense of purpose. The emperor was the subject of a series of rites and ceremonies, including a formal coronation performed by the Patriarch of Constantinople . The Byzantine state
560-519: A 50-year period that almost saw the end of the Roman Empire. The last vestiges of Republicanism were lost in the ensuing anarchy. In 238, the Senate attempted to regain power by proclaiming Pupienus and Balbinus as their own emperors (the first time since Nerva ). They managed to usurp power from Maximinus Thrax , but they were killed within two months. With the rise of the "soldier emperors",
700-581: A change of ministers, and those hostile to the Goths were replaced by officers favorable to Alaric, who began peace negotiations. While the embassy was absent, a new change occurred at Ravenna, and Honorius disclaimed the peace which was on the verge of being concluded. The enraged Alaric returned to Rome in late 409 and forced the Senate to elect Priscus Attalus as emperor, who ratified Alaric's former treaty with Stilicho. Rome had been under Visigothic siege since shortly after Stilicho's deposition and execution in
840-546: A court title bestowed to prominent figures of the government, and lost even more relevance after the creation of the title sebastokrator by Alexios I Komnenos . Despite this, its regular use by earlier emperors led to the name becoming synonym with "emperor" in certain regions. Several countries use Caesar as the origin of their word for "emperor", like Kaiser in Germany and Tsar in Bulgaria and Russia . After
980-508: A daughter, Honorius's half-sister Galla Placidia . Honorius, Arcadius, and Galla Placidia were the only children of Theodosius to survive into adulthood. After holding the consulate at the age of two in 386, Honorius was declared augustus by his father Theodosius I , and thus co-ruler, on 23 January 393, after the death of Valentinian II and the usurpation of Eugenius . When Theodosius died in January 395, Honorius and Arcadius divided
1120-468: A digression on 6th century Italian history, where he refers to mastromilis meaning 'captain-general of the army' in the 'Roman tongue'. By the time of writing in the mid-10th century working knowledge of Latin was mostly absent in the Byzantine imperial court. By the 12th century, the term was being used to describe a man who organized the military force of a political or feudal leader on his behalf. In
1260-544: A family name ( nomen ), styling himself as Imp. Caesar instead of Imp. Julius Caesar . However, the nomen was still inherited by women (such as Julia the Younger ) and appear in some inscriptions. After the death of Caligula , Augustus' great-grandson, his uncle Claudius was proclaimed emperor. He was not an official member of the Julia gens , but he was the grandson of Octavia , Augustus' sister, and thus still part of
1400-536: A gladiator fight. Roman emperor The legitimacy of an emperor's rule depended on his control of the Roman army and recognition by the Senate ; an emperor would normally be proclaimed by his troops, or by the Senate, or both. The first emperors reigned alone; later emperors would sometimes rule with co-emperors to secure the succession or to divide the administration of the empire between them. The office of emperor
1540-467: A large army through the Julian Alps and entered Italy. Stilicho hurried back to protect Honorius and the legions of Gaul and Britain were summoned to defend Italy. Honorius, at Milan, was besieged by Alaric, who marched into Liguria . Stilicho narrowly defeated Alaric at Pollentia , on the river Tanarus on Easter Day (6 April 402). Alaric retreated to Verona , where Stilicho attacked him again yet
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#17327653681441680-473: A new caesar . Each pair ruled over a half of the Empire, which led to the creation of a Western and Eastern Roman Empire , a division that eventually became permanent. This division had already a precedent in the joint rule of Valerian / Gallienus and Carus / Carinus . Diocletian justified his rule not by military power, but by claiming divine right . He imitated Oriental divine kingship and encouraged
1820-515: A position later termed Caesaropapism . In practice, an emperor's authority on Church matters was frequently subject to challenge. The Western Roman Empire collapsed in the late 5th century after multiple invasions by Germanic barbarian tribes, with no recognised claimant to Emperor of the West remaining after the death of Julius Nepos in 480. Instead the Eastern emperor Zeno proclaimed himself as
1960-490: A regime in which the notion of legitimacy is as absent as that of the Augustan principate". Imperial propaganda was often used to legitimize or de-legitimize certain emperors. The Chronicon Paschale , for example, describes Licinius as having been killed like "those who had briefly been usurpers before him". In reality, Licinius was the legitimate emperor of the West (having been appointed by Galerius ), while Constantine
2100-561: Is known as the Dominate , derived from the title dominus ("lord") adopted by Diocletian . During his rule, the emperor became an absolute ruler and the regime became even more monarchical. The emperors adopted the diadem crown as their supreme symbol of power, abandoning the subtleties of the early Empire. Beginning in the late 2nd century, the Empire began to suffer a series of political and economic crises, partially because it had overexpanded so much. The Pax Romana ("Roman peace")
2240-506: Is located randomly in the middle of a discussion of southern Italy ; no further mention of Britain is made, which has led some modern academics to suggest that the rescript does not apply to Britain, but to Bruttium in Italy . In his History of the Wars , Procopius mentions a likely apocryphal story where, on hearing the news that Rome had "perished", Honorius was initially shocked, thinking
2380-598: Is never used. The imperial titles are treated as inseparable of the person, which is reflected in the name Imperator Caesar Vespasianus Augustus . This Lex sometimes related to the Lex regia ("royal law") mentioned in the Corpus Juris Civilis of Eastern emperor Justinian I (r. 527–565), who cites the early 3rd-century writer Ulpian . This was probably a later construct, as its very name, which derives from rex ("king"), would have been utterly rejected in
2520-633: Is often said to have ended with the tyrannical reign of Commodus. His murder was followed by the accession of Septimius Severus , the victor of the Year of the Five Emperors . It was during his reign that the role of the army grew even more, and the emperors' power increasingly depended on it. The murder of his last relative, Severus Alexander , led to the Crisis of the Third Century (235–285),
2660-520: Is often said to have followed a " Caesaropapist " model, where the emperor played the role of ruler and head of the Church, but there was often a clear distinction between political and secular power. The line of Eastern emperors continued uninterrupted until the sack of Constantinople and the establishment of the Latin Empire in 1204. This led to the creation of three lines of emperors in exile:
2800-464: Is still often regarded as a usurper, similarly to Magnus Maximus , who was briefly recognized by Theodosius I . Western emperors such as Magnentius , Eugenius and Magnus Maximus are sometimes called usurpers, but Romulus Augustulus is traditionally regarded as the last Western emperor, despite never receiving the recognition of the Eastern emperor Zeno . The period after the Principate
2940-462: The Gesta Herwardi , the hero is several times described as magister militum by the man who translated the original Old English account into Medieval Latin . It seems possible that the writer of the original version, now lost, thought of him as the hereward ' ( Old English : here , lit. 'army' and no: weard , lit. 'guard') – the supervisor of
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#17327653681443080-399: The pomerium ; and use discretionary power whenever necessary. The text further states that he is "not bound by laws", and that any previous act was retroactively considered legitimate. There is no mention of imperium nor tribunicia potestas , although these powers were probably given in the earlier clauses. There is also no mention of any "imperial office", and the title of "emperor"
3220-635: The Constantinian dynasty , emperors followed Imperator Caesar with Flavius , which also began as a family name but was later incorporated into the emperor's titles, thus becoming Imperator Caesar Flavius . The last use of the formula, rendered as Autokrator Kaisar Flabios... Augoustos (Αὐτοκράτωρ καῖσαρ Φλάβιος αὐγουστος) in Greek, is in the Basilika of Leo VI the Wise (r. 886–912). Originally
3360-528: The Papal States . Pepin's son, Charlemagne , was crowned Imperator Romanorum (the first time Imperator was used as an actual regnal title) by Pope Leo III in Christmas AD 800, thus ending the recognition of the Eastern emperor. Western rulers also began referring to the Empire as the "Greek Empire", regarding themselves as the true successors of Rome. The inhabitants of the Eastern half of
3500-713: The Praetorian Guards and their leaders, the Praetorian Prefects , had supported Constantine's enemy, Maxentius, he disbanded the Guard and deprived the Prefects of their military functions, reducing them to a purely civil office. To replace them, he created two posts: a commander of the infantry , the magister peditum ("master of foot"), and a more prestigious cavalry commander, the magister equitum ("master of horse"). These offices had precedents in
3640-477: The Roman Republic and was given to victorious commanders by their soldiers. They held imperium , that is, military authority. The Senate could then award the extraordinary honor of a triumph ; the commander then retained the title until the end of his magistracy . In Roman tradition, the first triumph was that of Romulus , the founder of Rome, but the first attested use of imperator was in 189 BC, on
3780-575: The Tetrarchy the powers of the caesar increased considerably, but following the accession of Constantine I it once more remained as a title for heirs with no significant power attached to it. The title slowly lost importance in the following decades, as emperors started to promote their sons directly to augustus . In the East, the title finally lost its imperial character in 705, when Justinian II awarded it to Tervel of Bulgaria . After this it became
3920-566: The West and one in the East , emperors ruled in an openly monarchic style. Although succession was generally hereditary, it was only hereditary if there was a suitable candidate acceptable to the army and the bureaucracy, so the principle of automatic inheritance was not adopted, which often led to several claimants to the throne . Despite this, elements of the republican institutional framework (Senate, consuls, and magistrates) were preserved even after
4060-565: The de facto sole ruler of Rome in 48 BC, when he defeated his last opposition at the Battle of Pharsalus . His killers proclaimed themselves as the liberatores ("liberators") and the restorers of the Republic, but their rule was cut short by Caesar's supporters, who almost immediately established a new dictatorship. In his will, Caesar appointed his grandnephew Octavian as his heir and adopted son. He inherited his property and lineage,
4200-422: The emperors of Nicaea , the emperors of Trebizond , and the short-lived emperors of Thessalonica . The Nicean rulers have been traditionally regarded as the "legitimate" emperors of this period, as they recovered Constantinople and restored the Empire in 1261. The Empire of Trebizond continued to exist for another 200 years, but from 1282 onwards its rulers used the modified title of "Emperor and Autocrat of all
4340-546: The fall of the Western Roman Empire , as it was used by rulers such as Theodoric the Great . Magister militum Magister militum ( Latin for "master of soldiers"; pl. : magistri militum ) was a top-level military command used in the late Roman Empire , dating from the reign of Constantine the Great . The term referred to the senior military officer (equivalent to a war theatre commander,
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4480-597: The grain supply to Rome , but the governor, Heraclian, who was loyal to Honorius, wiped out this force as soon as it landed on the coast. As Rome was dependent on North African grain for sustenance, the populace was faced with the prospect of famine, and they blamed Attalus for the impending calamity. Growing desperate, Attalus searched for means of pacifying the people, but found himself, in consequence of conciliatory expenditures, incapable of satisfying his debt to Alaric, and thus alienated both Romans and Goths. In turn he came out to be exploited in political terms. Confronted with
4620-401: The magister militum Spaniae (c. 562). In the course of the 6th century, internal and external crises in the provinces often necessitated the temporary union of the supreme regional civil authority with the office of the magister militum . In the establishment of the exarchates of Ravenna and Carthage in 584, this practice found its first permanent expression. Indeed, after the loss of
4760-408: The proconsuls of the few senatorial provinces and allies such as Agrippa . The governors appointed to the imperial provinces only answered to the emperor himself, who could maintain or replace them at will. The tribunician power ( tribunicia potestas ), first assumed by Augustus in 23 BC, gave him authority over the tribune of the plebs without having to actually hold the office – a tribune
4900-519: The " Year of the Five Emperors ", but modern scholarship now identifies Clodius Albinus and Pescennius Niger as usurpers because they were not recognized by the Roman Senate . Recognition by the Senate is often used to determine the legitimacy of an emperor, but this criterion is not always followed. Maxentius is sometimes called an usurper because he did not have the recognition of Tetrarchs , but he held Rome for several years, and thus had
5040-594: The "shadow emperor". In 476, the Heruli Odoacer overthrew the child-emperor Romulus Augustulus , made himself king of Italy and shipped the imperial regalia to the Emperor Zeno in Constantinople. Historians mark this date as the date of the fall of the Western Roman Empire , although by this time there was no longer any "Empire" left, as its territory had reduced to Italy. Julius Nepos , who
5180-573: The 5th century, there was scarcely a single decade without succession conflicts and civil war. During this period, very few emperors died of natural causes. Such problems persisted in the later Eastern Empire, where emperors had to often appoint co-emperors to secure the throne. Despite often working as a hereditary monarchy, there was no law or single principle of succession. Individuals who claimed imperial power "illegally" are referred to as " usurpers " in modern scholarship. Ancient historians refer to these rival emperors as " tyrants ". In reality, there
5320-532: The 9th century. Its last known use was on 866–867 coins of Michael III and his co-emperor Basil I , who are addressed as imperator and rex respectively. In the West, imperator was transformed into a monarchical title by Charlemagne , becoming the official Latin title of the Holy Roman Empire . Originally the cognomen (third name) of the dictator Gaius Julius Caesar , which was then inherited by Augustus and his relatives. Augustus used it as
5460-706: The East, the Iberians , and the Perateia ", accepting the Niceans as the sole Roman emperors. However, the Byzantine Empire had been reduced mostly to Constantinople, and the rise of other powers such as Serbia and Bulgaria forced the Byzantines to recognize their rulers as basileus . Despite this, emperors continued to view themselves as the rulers of an "universal empire". During the last decades of
5600-432: The Empire always saw the emperor as an open monarch. Starting with Heraclius in 629, Roman emperors styled themselves " basileus ", the traditional title for Greek monarchs used since the times of Alexander the Great . The title was used since the early days of the Empire and became the common imperial title by the 3rd century, but did not appear in official documents until the 7th century. Michael I Rangabe (r. 811–813)
5740-440: The Empire used it regularly. It began to used in official context starting with Septimius Severus , and was first officially adopted in coinage by Aurelian . In the East, imperator was translated as autokrator ("self-ruler"), a title that continued to be used until the end of the Empire. This is the modern Greek word for "emperor" ( υτοκράτορας ). There are still some instances of imperator in official documents as late as
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5880-494: The Empire, power was once again shared between multiple emperors and colleagues, each ruling from their own capital, notably during the long reign of John V . Constantinople finally fell to the Ottoman Turks in 1453; its last emperor, Constantine XI Palaiologos , dying in battle. The last vestiges of the empire, Morea and Trebizond , fell in 1461. The title imperator – from imperare , "to command" – dates back to
6020-466: The Empire, while later functioning as de facto separate entities, were always considered and seen, legally and politically, as separate administrative divisions of a single, insoluble state by the Romans of the time. In the West , the office of emperor soon degenerated into being little more than a puppet of Germanic generals such as Aetius and Ricimer ; the last emperors of the West being known as
6160-435: The Empire. Honorius became Western Roman emperor at the age of ten. During the early part of his reign, Honorius depended on the military leadership of the general Stilicho , who had been appointed by Theodosius and was of mixed Vandal and Roman ancestry. To strengthen his bonds with the young emperor and to make his grandchild an imperial heir, Stilicho married his daughter Maria to Honorius. The epithalamion written for
6300-603: The English translation of the Latin imperator , then Julius Caesar had been an emperor, like several Roman generals before him. Instead, by the end of the Caesar's civil wars , it became clear that there was certainly no consensus to return to the old-style monarchy , but that the period when several officials would fight one another had come to an end. Julius Caesar, and then Augustus after him, accumulated offices and titles of
6440-515: The Republic, Diocletian established at the top of this new structure the Tetrarchy ("rule of four") in an attempt to provide for smoother succession and greater continuity of government. Under the Tetrarchy, Diocletian set in place a system of two emperors ( augusti ) and two subordinates that also served as heirs ( caesares ). When an emperor retired (as Diocletian and Maximian did in 305) or died, his caesar would succeed him and in turn appoint
6580-668: The Rhine and invaded Gaul . The situation in Britain was even more difficult. The British provinces were isolated, lacking support from the Empire, and the soldiers supported the revolts of Marcus (406–407), Gratian (407), and Constantine III . Constantine invaded Gaul in 407, occupying Arles , and while Constantine was in Gaul, his son Constans ruled over Britain. By 410, Britain may have been told to look after its own affairs and expect no aid from Rome , although it has been argued that
6720-421: The Roman state as an autocrat , but he failed to create a stable system to maintain himself in power. His rise to power was the result of a long and gradual decline in which the Republic fell under the influence of powerful generals such as Marius and Sulla . At the end of the Republic no new, and certainly no single, title indicated the individual who held supreme power. Insofar as emperor could be seen as
6860-443: The Roman world among them. Lepidus was sidelined in 36 BC, and relations between Octavian and Antony soon deteriorated. In September 31 BC, Octavian's victory at Actium put an end to any effective opposition and confirmed his supremacy over Rome. In January 27 BC, Octavian and the Senate concluded the so-called " First settlement ". Until then Octavian had been ruling the state with his powers as triumvir , even though
7000-479: The Senate awarded him the appellation of augustus ("elevated"). The honorific itself held no legal meaning, but it denoted that Octavian (henceforth Augustus ) now approached divinity, and its adoption by his successors made it the de facto main title of the emperor. He also received the civic crown alongside several other insignias in his honor. Augustus now held supreme and indisputable power, and even though he still received subsequent grants of powers, such as
7140-464: The Triumvirate itself disappeared years earlier. He announced that he would return the power to the Senate and People of Rome , but this was only an act. The Senate confirmed Octavian as princeps , the " first among equals ", and gave him control over almost all Roman provinces for a tenure of ten years. This limitation was only superficial, as he could renew his powers indefinitely. In addition,
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#17327653681447280-563: The Visigoths poured in. The city had not been under the control of a foreign force since an invasion of Gauls some eight centuries before. The sack itself was notably mild as sacks go. For example, churches and religious statuary went unharmed. The psychological blow to the contemporary Roman world was considerably more painful. The shock of this event reverberated from Britain to Jerusalem, and inspired Augustine to write his magnum opus , The City of God . The revolt of Constantine III in
7420-505: The West acknowledged the Eastern emperors until the accession of Empress Irene in 797. After this, the papacy created a rival lineage of Roman emperors in western Europe, the Holy Roman Emperors , which ruled the Holy Roman Empire for most of the period between 800 and 1806. These emperors were never recognized in Constantinople and their coronations resulted in the medieval problem of two emperors . The last Eastern emperor
7560-423: The West. The Eastern Greek-speaking half of the Empire had always regarded the emperors as open monarchs ( basileis ), and called them as such. The weakest point of the Augustan institution was its lack of a clear succession system. Formally announcing a successor would have revealed Augustus as a monarch, so he and subsequent emperors opted to adopt their best candidates as their sons and heirs. Primogeniture
7700-704: The adoptive son of the long-deceased Marcus Aurelius , hence why he named Caracalla after him. Later Eastern imperial dynasties, such as the Doukai and Palaiologoi , claimed descent from Constantine the Great . What turns a "usurper" into a "legitimate" emperor is typically that they managed to gain the recognition of a more senior, legitimate, emperor, or that they managed to defeat a more senior, legitimate emperor and seize power. Modern historiography has not yet defined clear legitimacy criteria for emperors, resulting in some emperors being included or excluded from different lists. The year 193 has traditionally been called
7840-400: The arrest and execution of Stilicho. With Stilicho's fall, Honorius moved against all of his former father-in-law's allies, killing and torturing key individuals and ordering the confiscation of the property of anyone who had borne any office while Stilicho was in command. Honorius's wife Thermantia was taken from the imperial throne and given over to her mother; Eucherius, the son of Stilicho,
7980-474: The authority based on prestige. The honorific was awarded as both a name and a title to Octavian in 27 BC and was inherited by all subsequent emperors, who placed it after their personal names. The only emperor to not immediately assume it was Vitellius , although he did use it after his recognition by the Senate. Later emperors ruled alongside one or several junior augusti who held de jure (but not de facto ) equal constitutional power. Despite its use as
8120-491: The battle was not entirely conclusive. The Visigoths were allowed to retreat back to Illyricum. In 405 Stilicho met an invasion of Italy led across the Danube by Radagaisus . They brought devastation to the heart of the Empire, until Stilicho defeated them in 406 and recruited most of them into his forces. Then, in 405 or 406, a number of tribes, according to some sources allegedly including Vandals , Alans , and Suebi , crossed
8260-629: The by-now mostly Germanic Roman army , Honorius could do little to attack Alaric's forces directly, and apparently adopted the only strategy he could in the situation: wait passively for the Visigoths to grow weary and spend the time marshalling what forces he could. This course of action appeared to be the product of Honorius's indecisive character and he suffered much criticism for it both from contemporaries and later historians. To counter Attalus, Honorius tried to negotiate with Alaric in addition to restricting grain shipments to Rome from North Africa. Attalus dispatched an army to conquer Africa and restore
8400-482: The central government. It removed the imperial governors and allowed the inhabitants, as a dependent federation, to conduct their own affairs, for which purpose representatives of all the towns were to meet every year in Arles . In 417, Constantius married Honorius's sister, Galla Placidia , much against her will. In 421, Honorius recognized him as co-emperor Constantius III; however, when the announcement of his elevation
8540-476: The city and Senate of Rome began to lose importance. Maximinus and Carus , for example, did not even set foot on the city. Carus' successors Carinus and Numerian , the last of the Crisis emperors, did not bother to assume the tribunicia potestas either. After reuniting the Roman Empire in 285, Diocletian began a series of reforms to restore stability. Reaching back to the oldest traditions of job-sharing in
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#17327653681448680-511: The coastal city of Ravenna , which was protected by a ring of marshes and strong fortifications. While the new capital was easier to defend, it was poorly situated to allow Roman forces to protect Central Italy from the increasingly regular threat of barbarian incursions. It was significant that the Emperor's residence remained in Ravenna until the overthrow of Romulus Augustulus in 476. That
8820-400: The continuance of the Republic. The title had already been used by Pompey and Julius Caesar , among others. It was a purely honorific title with no attached duties or powers, hence why it was never used in official titulature. The title was the most preferred by Augustus as its use implies only "primacy" (is in the " first among equals "), as opposed to dominus , which implies dominance. It
8960-399: The court during the transition from Arcadius to Theodosius II . Summoned from Ravenna for advice, Stilicho advised Honorius not to go, and proceeded to go himself. In Stilicho's absence, a minister named Olympius gained the confidence of Honorius. He convinced the emperor that his father-in-law was conspiring with the barbarians to overthrow him. On his return to Ravenna, Honorius ordered
9100-549: The creation of a worship cult . Augustus became pontifex maximus (the chief priest of the College of Pontiffs ) in 12 BC, after the death of the former triumvir Lepidus . Emperors from the reign of Gratian (r. 375–383) onward used the style pontifex inclytus ("honorable pontiff"). The title of pontifex maximus was eventually adopted by the bishops of Rome during the Renaissance . The last known emperors to use
9240-632: The death of the Empress Maria in 407. Another invasion by Alaric was prevented in 408 by Stilicho when he forced the Roman Senate to pay 4,000 pounds of gold to persuade the Goths to leave Italy. Honorius, in the meantime, was at Bononia , on his way from Ravenna to Ticinum , when the news reached him of his brother's death in May 408. He at first was planning to go to Constantinople to help set up
9380-432: The east, emperor Theodosius I (379-395) expanded the system of two magistri militum to include an additional three magistri . For a long time these generals were used in an ad hoc manner, being employed wherever they were needed. Eventually in the fifth century their positions became more firmly established, and there were two senior generals, who were each appointed to the office of magister militum praesentalis . During
9520-539: The eastern provinces to the Muslim conquest in the 640s, the surviving field armies and their commanders formed the first themata . Supreme military commanders sometimes also took this title in early medieval Italy, for example in the Papal States and in Venice , whose Doge claimed to be the successor to the Exarch of Ravenna . The term is referred to by Emperor Constantine VII in his De Administrando Imperio in
9660-617: The emperor derived from an extraordinary concentration of individual powers and offices that were extant in the Republic and developed under Augustus and later rulers, rather than from a new political office. Under the Republic, these powers would have been split between several people, who would each exercise them with the assistance of a colleague and for a specific period of time. Augustus held them all at once by himself, and with no time limits; even those that nominally had time limits were automatically renewed whenever they lapsed. The Republican offices endured and emperors were regularly elected to
9800-557: The emperor remaining the supreme commander) of the empire. In Greek sources, the term is translated either as strategos or as stratelates (although these terms were also used non-technically to refer to commanders of different ranks). The office of magister militum was created in the early 4th century, most likely when the Western Roman emperor Constantine the Great defeated all other contemporary Roman emperors, which gave him control over their respective armies. Because
9940-413: The end of the Empire. In the West, the title was also used by Charlemagne and the subsequent Holy Roman Emperors as part of the formula Imperator Augustus . Both Eastern and Western rulers also used the style semper augustus ("forever augustus"). The word princeps , meaning "first", was a republican term used to denote the leading member of the Senate, and it was used by the early emperors to emphasize
10080-536: The end of the Western Empire. Constantine the Great , the first Christian emperor, moved the capital from Rome to Constantinople , formerly known as Byzantium , in 330 AD. Roman emperors had always held high religious offices; under Constantine there arose the specifically Christian idea that the emperor was God's chosen ruler on earth, a special protector and leader of the Christian Church,
10220-441: The failure of the Tetrarchy. This practice had first been applied by Septimius Severus , who proclaimed his 10-year-old son Caracalla as augustus . He was followed by Macrinus , who did the same with his 9-year-old son Diadumenian , and several other emperors during the Crisis. This became even more common from the 4th century onwards. Gratian was proclaimed emperor at the age of 8, and his co-ruler and successor Valentinian II
10360-500: The family. Following the suicide of Nero, the last descendant of Caesar, the new emperor Galba adopted the name of Servius Galba Caesar Augustus , thus making it part of the imperial title. Five days before his murder he adopted Piso Licinianus as his son and heir, renaming him as Servius Sulpicius Galba Caesar . After this Caesar came to denote the heir apparent, who would add the name to his own as heir and retain it upon accession as augustus . The only emperor not to assume it
10500-412: The first emperor, whereas Julius Caesar is considered the last dictator of the Roman Republic , a view that is shared by the Roman writers Plutarch , Tacitus , and Cassius Dio . Conversely, the majority of Roman writers, including Pliny the Younger , Suetonius and Appian , as well as most of the ordinary people of the Empire, thought of Julius Caesar as the first emperor. Caesar did indeed rule
10640-569: The future emperor Valentinian III and his sister, Honoria , were forced to flee to Constantinople. Honorius died of edema on 15 August 423, leaving no heir. In the subsequent interregnum Joannes was nominated Emperor. The following year, however, the Eastern Emperor Theodosius II installed his cousin Valentinian III , son of Galla Placidia and Constantius III , as Emperor. The Mausoleum of Honorius
10780-417: The granting of tribunicia potestas in 23 BC, these were only ratifications of the powers he already possessed. Most modern historians use 27 BC as the start date of the Roman Empire. This is mostly a symbolic date, as the Republic had essentially disappeared many years earlier. Ancient writers often ignore the legal implications of Augustus' reforms and simply write that he "ruled" Rome following
10920-414: The highest imperial title, it was generally not used to indicate the office of Emperor itself, as ordinary people and writers had become accustomed to Imperator . In the East the title was initially translated as Sebastos , but the form Augoustos eventually became more common. Emperors after Heraclius styled themselves as Basileus , but Augoustos still remained in use in a lesser form up until
11060-445: The highest importance in the Republic, making the power attached to those offices permanent, and preventing anyone with similar aspirations from accumulating or maintaining power for themselves. Julius Caesar had been pontifex maximus since 64 BC; held the offices of consul and dictator five times since 59 BC, and was appointed dictator in perpetuity in 44 BC, shortly before his assassination . He had also become
11200-550: The immediate disposal of the emperors, and by the late fourth century or early fifth century were termed in praesenti ("in the presence" of the emperor). Over the course of the fourth century in the Western Roman Empire , the system of two imperial magistri remained largely intact, with usually one magister having paramount authority (such as Bauto or Merobaudes, the main power behind the appointment of emperor Valentinian II.) This tendency culminated in Arbogast , who inherited
11340-486: The immediate imperial past, both in function and idea; the latter title had existed since republican times , as the second-in-command to a Roman dictator . Under Constantine's successors, the titles were also established at a territorial level: magistri peditum and magistri equitum were appointed for every praetorian prefecture ( per Gallias , per Italiam , per Illyricum , per Orientem ), and, in addition, for Thrace and, sometimes, Africa . On occasion,
11480-407: The increasing unpopularity and truculence of Attalus, Alaric dethroned him in 410 and proposed to renew negotiations with Honorius. Honorius, overconfident at Attalus's fall and the victory of his general Heraclian over Attalus's African expeditionary force, refused negotiation, and declared Alaric the eternal enemy of the Republic. Stricken by starvation, somebody opened Rome's defenses to Alaric and
11620-521: The influence of Constantius, Honorius issued the Edict of 418, which was designed to enable the Empire to retain a hold on the lands which were to be surrendered to the Goths. This edict relaxed the administrative bonds that connected all the Seven Provinces (The Maritime Alps, Narbonensis Prima , Narbonensis Secunda , Novempopulania , Aquitania Prima , Aquitania Secunda and Viennensis ) with
11760-467: The loyalty of most of his allies, and – again through a formal process of senatorial consent – an increasing number of the titles and offices that had accrued to Caesar. In August 43 BC, following the death of both consuls of the year , Octavian marched to Rome and forced the Senate to elect him consul. He then formed the Second Triumvirate alongside Mark Antony and Lepidus , dividing
11900-421: The main title of the emperor. According to Suetonius , it was "not merely a new title but a more honorable one, inasmuch as sacred places too, and those in which anything is consecrated by augural rites are called "august" ( augusta ), from the increase ( auctus ) in dignity". It was also connected to the religious practice of augury , which was itself linked to Rome's founding by Romulus , and to auctoritas ,
12040-472: The marginalization of the former heartland of Italy to the empire had a profound cultural impact on the empire and its emperor, which adopted a more Hellenistic character. The Eastern emperors continued to be recognized in the Western kingdoms until the accession of Irene (r. 797–802), the first empress regnant . The Italian heartland was recovered during the reign of Justinian I (r. 527–565), but this
12180-411: The most prominent of them: the consulship and censorship . This early period of the Empire is known as the " Principate ", derived from the title princeps used by the early emperors. The most important bases of the emperor's power were his supreme power of command ( imperium maius ) and tribunician power ( tribunicia potestas ) as personal qualities, separate from his public office. Originally,
12320-510: The murder of Caesar, or that he "ruled alone" after the death of Mark Antony. Most Romans thus simply saw the "emperor" as the individual that ruled the state, with no specific title or office attached to him. Augustus actively prepared his adopted son Tiberius to be his successor and pleaded his case to the Senate for inheritance on merit. After Augustus' death in AD ;14, the Senate confirmed Tiberius as princeps and proclaimed him as
12460-447: The new augustus . Tiberius had already received imperium maius and tribunicia potestas in AD 4, becoming legally equal to Augustus but still subordinate to him in practice. The "imperial office" was thus not truly defined until the accession of Caligula , when all of Tiberius' powers were automatically transferred to him as a single, abstract position that was symbolized by his sacred title of augustus . The legal authority of
12600-470: The news was in reference to a favourite chicken he had named "Roma". At that time they say that the Emperor Honorius in Ravenna received the message from one of the eunuchs, evidently a keeper of the poultry, that Rome had perished. And he cried out and said, 'And yet it has just eaten from my hands!' For he had a very large cock, Rome by name; and the eunuch comprehending his words said that it
12740-647: The occasion by Stilicho's court poet Claudian survives. Honorius was also influenced by the Popes of Rome . So it was that Pope Innocent I and Western bishops may have been successful in persuading Honorius to write to his brother, arguing for convening a synod in Thessalonica. At first Honorius based his capital in Milan , but when the Visigoths under King Alaric I entered Italy in 401 he moved his capital to
12880-429: The offices would be combined in a single person, then styled magister equitum et peditum or magister utriusque militiae ("master of both forces"). Overall, lower-level magistri were assigned according to circumstances, with varying numbers employed in a given area. Some were directly in command of the local mobile field army of the comitatenses , which acted as a rapid reaction force . Other magistri remained at
13020-549: The order was sent to the people of Bruttium in Italy, not Britain. The western empire was effectively overstretched due to the massive invasion of Alans , Suebi and Vandals who, although they had been repulsed from Italy in 406, moved into Gaul on 31 December 406, and arrived in Hispania in 409. In early 408, Stilicho attempted to strengthen his position at court by marrying his second daughter, Thermantia , to Honorius after
13160-413: The position of western magister militum and used it to functionally usurp emperor Valentinian II, either killing him or driving him to suicide before appointing his own puppet emperor, Eugenius. In the west, the position (often under the title of magister utriusque militiae or MVM) remained very powerful until the formal end of the empire, and was held by Stilicho , Aetius , Ricimer , and others. In
13300-410: The powers of command where divided in consular imperium for Rome and proconsular imperium for the provinces . This division became obsolete in 19 BC, when Augustus was given consular imperium – despite leaving the consulship in 23 BC – and thus control over all troops. This overwhelming power was referred to as imperium maius to indicate its superiority to other holders of imperium , such as
13440-448: The protectors of the Church. The territorial divisions of the Tetrarchy were maintained, and for most of the following century the Empire was ruled by two senior emperors, one in the West (with Milan and later Ravenna as capital) and another in the East (with Constantinople as capital). This division became permanent on the death of Theodosius I in 395, when he was succeeded by his sons Honorius and Arcadius . The two halves of
13580-440: The recognition of the Senate. Other "usurpers" controlled, if briefly, the city of Rome, such as Nepotianus and Priscus Attalus . In the East, the possession of Constantinople was the essential element of legitimacy, yet some figures such as Procopius are treated as usurpers. Rival emperors who later gained recognition are not always considered legitimate either; Vetranio had the formal recognition by Constantius II yet he
13720-491: The reign of Emperor Justinian I , with increasing military threats and the expansion of the Eastern Empire, the posts of the eastern generals were overhauled: the magister militum per Armeniam in the Armenian and Caucasian provinces, formerly part of the jurisdiction of the magister militum per Orientem , the magister militum per Africam in the reconquered African provinces (534), with a subordinate magister peditum , and
13860-406: The reverence of the emperor, making anything related to him sacer (sacred). He declared himself Jovius , the son of Jupiter , and his partner Maximian was declared Herculius , son of Hercules . This divine claim was maintained after the rise of Christianity, as emperors regarded themselves as the chosen rulers of God. The emperor no longer needed the Senate to ratify his powers, so he became
14000-400: The same fate with which Attalus had threatened Honorius. Remembering how Attalus had suggested that Honorius should retire to some small island, he returned the favor by banishing Attalus to the island of Lipara . Northeastern Gaul became subject to even greater Frankish influence, while a treaty signed in 418 granted to the Visigoths southwestern Gaul, the former Gallia Aquitania . Under
14140-451: The sole emperor of a theoretically undivided Roman Empire (although in practice he had no authority in the West). The subsequent Eastern emperors ruling from Constantinople styled themselves as " Basileus of the Romans" ( Ancient Greek : βασιλεύς Ῥωμαίων , Basileus Romaíon ) but are often referred to in modern scholarship as Byzantine emperors . The papacy and Germanic kingdoms of
14280-436: The sole source of law. These new laws were no longer shared publicly and were often given directly to the praetorian prefects – originally the emperor's bodyguard, but now the head of the new praetorian prefectures – or with private officials. The emperor's personal court and administration traveled alongside him, which further made the Senate's role redundant. Consuls continued to be appointed each year, but by this point, it
14420-482: The summer of 408. In 410, the Eastern Roman Empire sent six legions (6,000 men; due to changes in tactics, legions of this period were about 1,000 soldiers, down from the 6,000-soldier legions of the Republic era and Empire period up to late 4th century) from Ravenna to aid Honorius, but Alaric ambushed the legions on the way, and only a handful of them reached Rome. Lacking a strong general to control
14560-523: The support of Alans, Burgundians, and the nobility of Gallic descent. Jovinus tried to negotiate with the invading Goths of Ataulf (412), but his proclamation of his brother Sebastianus as Augustus made Ataulf seek alliance with Honorius. Honorius had Ataulf defeat and execute Jovinus in 413. At the same time, Heraclianus raised the standard of revolt in North Africa, but failed during an invasion of Italy. Defeated, he fled back to Carthage and
14700-418: The title continued to be used for a time, with emperors registering the number of times they were hailed imperator . The title became the main appellation of the ruler by the time of Vespasian . After the Tetrarchy , emperors began to be addressed as dominus noster ("our Lord"), although imperator continued to be used. The appellation of dominus was known and rejected by Augustus, but ordinary men of
14840-533: The title of caesar . The Senate still exercised some power during this period, as evidenced by his decision to declare Nero a "public enemy", and did influence in the succession of emperors. Following the murder of Domitian in AD 96, the Senate declared Nerva , one of their own, as the new emperor. His "dynasty", the Antonine , continued the adoptive system until the reign of Marcus Aurelius (r. 161–180). Marcus
14980-473: The title of consul was Constans II , who was also the last Eastern emperor to visit Rome. It's possible that later emperors also used it as an honorary title, as the office of consul was not abolished until 892, during the reign of Leo VI . During the Dominate it became increasingly common for emperors to raise their children directly to augustus (emperor) instead of caesar (heir), probably because of
15120-418: The title was Junius Blaesus in AD 22, after which it became a title reserved solely for the sovereign. Augustus used Imperator instead of his first name ( praenomen ), becoming Imperator Caesar instead of Caesar Imperator . From this the title slowly became a synonym of the office, hence the word "emperor". Tiberius , Caligula and Claudius avoided using the title, but it is recorded that Caligula
15260-545: The title were Valentinian III and Marcian , in the 5th century. The only surviving document to directly refer to the emperor's power is the Lex de imperio Vespasiani , written shortly after Vespasian 's formal accession in December 69. The text, of which only the second part survives, states that Vespasian is allowed to: make treaties; hold sessions and propose motions to the Senate; hold extraordinary sessions with legislative power; endorse candidates in elections; expand
15400-409: The tribunes, such as sacrosanctity , since 36 BC. With this powers, he could veto any act or proposal of any magistrate, propose laws and convoke the Senate. His sacrosanctity also made him untouchable, and any offence against him could be treated as a crime of treason. The tribunician power was arguably the most stable and important of the emperor's powers. Despite being a perpetual title, it
15540-514: The triumph of Aemilius Paulus . It was a title held with great pride: Pompey was hailed imperator more than once, as was Sulla and Julius Caesar . However, as noted by Cassius Dio , the meaning of the title changed under the new monarchy, and came to denote "the possession of the supreme power". Both Dio and Suetonius refer to Caesar as the first one to assume imperator as a proper name (a praenomen imperatoris ), but this seems to be an anachronism . The last ordinary general to be awarded
15680-507: The vague terms of "second" or "little emperor". Despite having a successful reign himself, Diocletian's tetrarchic system collapsed as soon as he retired in 305. Constantine I , the son of tetrarch Constantius I , reunited the empire in 324 and imposed the principle of hereditary succession which Diocletian intended to avoid. Constantine was also the first emperor to convert to Christianity , and emperors after him, especially after its officialization under Theodosius I , saw themselves as
15820-520: The west continued through this period. In 409, Gerontius , Constantine III's general in Hispania, rebelled against him, proclaimed Maximus Emperor, and besieged Constantine at Arles. Honorius now found himself an able commander, Constantius , who defeated Maximus and Gerontius , and then Constantine, in 411. Gaul was again a source of troubles for Honorius: just after Constantius's troops had returned to Italy, Jovinus revolted in northern Gaul, with
15960-674: Was Constantine XI Palaiologos , who died during the Fall of Constantinople to the Ottoman Empire in 1453. After conquering the city, Ottoman sultans adopted the title " Caesar of the Romans" ( kayser-i Rûm ). A Byzantine group of claimant emperors existed in the Empire of Trebizond until its conquest by the Ottomans in 1461, although they had used a modified title since 1282. Modern historians conventionally regard Augustus as
16100-415: Was Vitellius , who adopted the name Germanicus instead. Most emperors used it as their nomen – with Imperator as their praenomen – until the reign of Antoninus Pius , when it permanently became part of the formula Imperator Caesar [full name] Augustus . In the 3rd century, caesars also received the honorific of nobilissimus ("most noble"), which later evolved into a separate title. During
16240-508: Was also used to distinguish a junior co-emperor ( basileus ) from his senior colleague ( basileus autokrator ). By the times of the Palaiologos , there were two distinct ceremonies for the accession of an emperor: first an acclamation as basileus , and later a coronation as autokrator (which also included being raised on a shield). These rites could happen years apart. The Eastern Empire became not only an absolute monarchy but also
16380-512: Was always renewed each year, which often coincided with the beginning of a new regnal year (although " regnal years " were not officially adopted until Justinian I ). The office of censor was not fully absorbed into the imperial office until the reign of Domitian , who declared himself "perpetual censor" ( censor perpetuus ) in AD 85. Before this, the title had been only used by Claudius (47), Vespasian and Titus (both in 73). The emperor also had power over religious affairs, which led to
16520-446: Was an office often occupied by the emperor himself, who now had complete control over the bureaucratic apparatus. Diocletian did preserve some Republican traditions, such as the tribunicia potestas . The last known emperor to have used it was Anastasius I , at the start of the 6th century. Anastasius was also the last attested emperor to use the traditional titles of proconsul and pater patriae . The last attested emperor to use
16660-401: Was by definition a plebeian , whereas Augustus, although born into a plebeian family, had become a patrician when he was adopted into the gens Julia . By adopting the role of a tribune, Augustus was presenting himself as the representative of the common man and the protector of democracy. As always, this was not a sudden grant of power; Augustus had been receiving several powers related to
16800-534: Was erected. The year 410 also saw Honorius reply to a British plea for assistance against local barbarian incursions, called the Rescript of Honorius . Preoccupied with the Visigoths , Honorius lacked any military capability to assist the distant province. According to the sixth century Byzantine scholar Zosimus , "Honorius wrote letters to the cities in Britain, bidding them to guard themselves." This sentence
16940-419: Was hailed imperator by the Senate on his accession, indicating that it was already considered an integral part of the dignity. It was not until the late reign of Nero , in AD 66, that imperator became once more part of the emperor's nomenclature. Virtually all emperors after him used the praenomen imperatoris , with only a few variations under his successors Galba and Vitellius . The original meaning of
17080-452: Was killed. In 414, Constantius attacked Ataulf, who proclaimed Priscus Attalus emperor again. Constantius drove Ataulf into Hispania, and Attalus, having again lost Visigoth support, was captured and deposed once again. In the eleventh consulship of Honorius and the second of Constantius, the Emperor entered Rome in triumph, with Attalus at the wheels of his chariot. Honorius punished Attalus by cutting off his right finger and thumb, inflicting
17220-654: Was located on the Vatican Hill , accessed from the transept of the Old Saint Peter's Basilica . It was first used for Maria. Probably Thermantia and Honorius's sister Galla Placidia, and perhaps other imperial family members, were later buried there. In the 8th century it was transformed into a church, the Chapel of St Petronilla , which held the relics of the saint and was demolished when the New St Peter's
17360-454: Was negatively assessed by some 19th and 20th century historians, including J.B. Bury . Honorius issued a decree during his reign, prohibiting men from wearing trousers in Rome. The last known gladiatorial games took place during the reign of Honorius, who banned the practice in 399 and again in 404, reportedly due to the martyrdom of a Christian monk named Telemachus while he was protesting
17500-426: Was no distinction between emperors and usurpers, as many emperors started as rebels and were retroactively recognized as legitimate. The Lex de imperio Vespasiani explicitly states that all of Vespasian's actions are considered legal even if they happened before his recognition by the Senate. Ultimately, "legitimacy was a post factum phenomenon." Theodor Mommsen famously argued that "here has probably never been
17640-618: Was not relevant in the early Empire, although emperors still attempted to maintain a familiar connection between them; Tiberius , for example, married Julia the Elder , making him Augustus ' son-in-law. Vespasian , who took power after the collapse of the Julio-Claudian dynasty and the tumultuous Year of the Four Emperors , was the first emperor to openly declare his sons, Titus and Domitian , as his sole heirs, giving them
17780-407: Was overthrown and expelled to Dalmatia in favor of Romulus, continued to claim the title until his murder in 480. The Eastern court recognized this claim and Odoacer minted coins in his name, although he never managed to exercise real power. The death of Nepos left Zeno as the sole emperor of a (technically) reunited Roman Empire. The Roman Empire survived in the East for another 1000 years, but
17920-615: Was probably the reason why Ravenna was chosen not only as the capital of the Ostrogothic Kingdom in Italy, but also for the seat of the Byzantine exarchs as well. Honorius's reign experienced continued barbarian incursions into Gaul , Italy and Hispania . At the same time, a host of usurpers rose up. First Gildo , the comes of Africa and magister utriusque militiae per Africam in Northern Africa, led
18060-412: Was proclaimed emperor at the age of 4. Many child emperors such as Philip II or Diadumenian never succeeded their fathers. These co-emperors all had the same honors as their senior counterpart, but they did not share the actual government, hence why junior co-emperors are usually not counted as real emperors by modern or ancient historians. There was no title to denote the "junior" emperor; writers used
18200-522: Was put to death. The purge also massacred the families of Stilicho's foederati troops , and they defected en masse to Alaric. In October 408, Alaric returned to Italy to claim more gold and land to settle in, as feudatory vassals of the Empire, which Stilicho had promised him. The city bought him off with 5,000 lbs of gold and 30,000 lbs of silver after a short siege with Rome on the verge of famine. A palace revolution in Honorius's court led meanwhile to
18340-413: Was replaced with dominus ("lord"); the use of princeps and dominus broadly symbolizes the differences in the empire's government, giving rise to the era designations Principate and Dominate . The title is still found in some later sources, however. The poet Claudian , for example, describes Honorius as having been raised from " caesar " to " princeps " (instead of augustus ). The title survived
18480-617: Was reverted by the end of the century. Rome technically remained under imperial control , but was completely surrounded by the Lombards . Africa was lost to the Arabs in the early 7th century, and Rome eventually fell to the Lombards in 751, during the reign of Constantine V . The Frankish king Pepin the Short defeated them and received the favour of Pope Stephen II , who became the head of
18620-681: Was sacked for the first time since the Battle of the Allia almost 800 years prior. Honorius was born to Emperor Theodosius I and Empress Aelia Flaccilla on 9 September 384 in Constantinople . He was the brother of Arcadius and Pulcheria . In 386, his mother died, and in 387, Theodosius married Galla who had taken a temporary refuge in Thessaloniki with her family, including her brother Valentinian II and mother Justina , away from usurper Magnus Maximus . Theodosius and Galla had
18760-577: Was sent to Constantinople, Theodosius refused to recognise him. Constantius, enraged, began preparations for a military conflict with the eastern empire but before he could commence it, he died in September 421. In 420–422, another Maximus (or perhaps the same) gained and lost power in Hispania. By the time of Honorius's death in 423, Britain, Spain and Gaul had been ravaged by barbarians. In his final years, Honorius fell out with his sister after his soldiers clashed with hers. Galla Placidia and her children,
18900-459: Was the city of Rome which had perished at the hands of Alaric, and the emperor with a sigh of relief answered quickly: 'But I thought that my fowl Rome had perished.' So great, they say, was the folly with which this emperor was possessed. —Procopius, The Vandalic War ( III.2.25–26 ) While the tale is discounted as a rumour by more recent historians like Edward Gibbon , it is useful in understanding Roman public opinion towards Honorius. Honorius
19040-486: Was the first emperor to actually use the title of "Roman emperor" (βασιλεύς Ῥωμαίων, Basileus Romaíon ). This was a response to the new line of emperors created by Charlemagne – although he was recognized as basileus of the Franks . By the 9th century the full imperial title became " basileus and autokrator of the Romans", usually translated as "Emperor and Autocrat of the Romans". The title autokrator
19180-409: Was the first emperor to rule alongside other emperors, first with his adoptive brother Lucius Verus , who succeeded jointly with him, and later with his son Commodus , who was proclaimed co- augustus in 177. Despite being the son of a previous emperor and having nominally shared government with him, Commodus' rule ended with his murder at the hands of his own soldiers. From his death in 192 until
19320-602: Was the real "usurper" (having been proclaimed by his troops). There were no true objective legal criteria for being acclaimed emperor beyond acceptance by the Roman army , which was really the true basis of imperial power. Common methods used by emperors to assert claims of legitimacy, such as support of the army, blood connections (sometimes fictitious) to past emperors, distributing one's own coins or statues, and claims to pre-eminent virtue through propaganda, were pursued just as well by many usurpers as they were by legitimate emperors. Septimius Severus notably declared himself as
19460-408: Was the title used by early writers before the term imperator became popular. In his Res Gestae , Augustus explicitly refers to himself as the princeps senatus . The title was also sometimes given to heirs, in the form of princeps iuventutis ("first of the youth"), a term that continued to be used during the Tetrarchy . In the era of Diocletian and beyond, princeps fell into disuse and
19600-426: Was thought to be distinct from that of a rex ('king'). Augustus, the first emperor, resolutely refused recognition as a monarch. For the first three hundred years of Roman emperors, efforts were made to portray the emperors as leaders of the Republic, fearing any association with the kings who ruled Rome prior to the Republic. From Diocletian , whose reformed tetrarchy divided the position into one emperor in
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