Corca Modhruadh
CORCA MODHRUADH, race of Modruadh, son of Fergus MacRoigh; the name of a great clan in the north-west of Co. Clare, whose territory was co-extensive with the Diocese of Kilfenora, and of which the chief families were the O'Connors and O'Loghlens.
Alphabetical Index to Irish Surnames