Wethenoc was a 5th-century saint of Welsh origin who is also recognized within the Breton tradition. Born in Wales to Prince Fragan of Dumnonia and Saint Gwen, he was raised in Ploufragan, located near Saint-Brieuc in northwestern France. He grew up alongside his siblings, including his brothers Winwaloe and Jacut, as well as his sister Creirwy. During his youth, he received his education from Budoc of Dol on the Île Lavret.
Early life
As the son of Prince Fragan and Saint Gwen, Wethenoc spent much of his life in Brittany. He was the half-brother of Cadfan and lived with his siblings in the area of Ploufragan. His formative years included studies under the guidance of Budoc of Dol, who taught him on the Île Lavret near Paimpol.
Veneration
This saint is commemorated in both Catholic and Orthodox traditions. His feast day is observed annually on November 5. He remains a figure of historical and religious interest within the traditions of both Wales and Brittany.