Son of a local leader in Brittany in France, he was dedicated to God at birth by his parents. Nephew and student of Saint Theliau. Grew up in Wales. Monk. Abbot of Llandeilo Fawr, Carmarthenshire, Wales. Third bishop of Llandaff, Wales c.580. Mauric, king of Glamorgan, assisted him in his ministry, but Oudoceus excommunicated him for assassinating a prince named Cynedu.
- 615 of natural causes
- Book of Saints, by the Monks of Ramsgate
- Lives of the Saints, by Father Alban Butler
- Our Sunday Visitor’s Encyclopedia of Saints
- “Saint Oudoceus“. CatholicSaints.Info. 23 June 2013. Web. 22 May 2015. <>