Saint Colman mac Duagh, Irish abbot and bishop
Saint Colman mac Duagh (c. 560 – 29 October 632) was born at Corker, Kiltartan, County Galway, Ireland, the son of the Irish chieftain Duac (and thus, in Irish, mac Duach). He initially lived as a recluse, living in prayer and prolonged fastings, first on Inismore, then in a cave at the Burren in County Clare. With his relative, King Guaire Aidne mac Colmáin (d. 663) of Connacht he founded the monastery of Kilmacduagh, ("the church of the son of Duac"), and governed it as abbot-bishop.
He has been confused with Saint Colman of Templeshanbo (d. 595) who was from Connacht and lived somewhat earlier.