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1-506: McCaughey is an Irish surname . Spelling variations include: McHaughey , MacCaughey , McGaughey and O'Coffey , among others. Modern spelling comes from the original Mac hEochaidh. The McCaugheys are descendants of the ancient Dál Fiatach dynasty, rulers of the Ulaid . They trace their descent from Fiatach Finn mac Dáire , a King of Ulster and High King of Ireland in the 1st century AD. The McCaughey Family originated from Ireland in
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