This name is based on the local patron saint; Cormac Ua Liathain, a native of Cork, who paid a visit to St. Colmcille at the famous monastery he had founded in Durrow in 553 A.D. Cormac was so inspired by the great saint that he joined Colmcille and spent many years at Durrow, eventually taking over as abbot after Colmcille had gone to Iona in Scotland.