Saint Colman mac Duagh was born at Corker, Kiltartan, County Galway, Ireland, the son of the Irish chieftain Duac. 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 of Connacht he founded the monastery of Kilmacduagh,, and governed it as abbot-bishop.
