Clan O'Dea (in English) or Ó Deághaidh or Ua Deághaidh (in Irish) is a family descended from Deághaidh, a tenth-century Irish chieftain. The clan came originally from County Clare where there is an O'Dea Castle (52°54′41″N 9°03′28″W / 52.9113°N 9.0577°W / 52.9113; -9.0577) and other ruins at the townland of Dysert O'Dea near Corofin. The name O'Dea is normally pronounced oh-dee and sometimes oh-day in English. Clan descendants may have the sur...
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Clan O'Dea (in English) or Ó Deághaidh or Ua Deághaidh (in Irish) is a family descended from Deághaidh, a tenth-century Irish chieftain. The clan came originally from County Clare where there is an O'Dea Castle (52°54′41″N 9°03′28″W / 52.9113°N 9.0577°W / 52.9113; -9.0577) and other ruins at the townland of Dysert O'Dea near Corofin. The name O'Dea is normally pronounced oh-dee and sometimes oh-day in English. Clan descendants may have the surnames Day, O'Day, Dee, O'Dee, O'Dea, Dea, Godwin, or Goodwin.
The O'Deas, together with the O'Quinns (Ó Cuinn), belong to the Uí Fermaic, but it is not known if this kindred belongs to the Dál gCais or to the Uí Fidgenti. Another possibility are the Corcu Baiscind.
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