Son of a Breton chieftain. Educated at Landevennec, Brittany (in modern France under Saint Winwaloe in 489. Monk at Landevennec. Abbot of Landevennec in 532. Missionary to Britain and Ireland where he abolished the last pagan customs. Helped establish Cornouailles in Brittany in 546.
- in Brittany
- c.550 at Landevennec, Brittany of natural causes
- interred at Corbeil, France
- remains destroyed during the anti-Catholic excesses of the French Revolution
- causing a spring to gush forth