Abbot of Bangor (Co. Down), is one of the the best-attested founders of monastic churches in 6th-cent. Ireland. The 7th-cent. Life of St. Columbanus by Jonas of Bobbio describes Columbanus's years of study with Comgall; his virtues are praised in a hymn preserved in the late-7th-cent. Antiphonary of Bangor. Feast day, 10 May.