Derfel was a 6th-century Celtic Christian monk and saint from Wales. According to local legends, he was a powerful warrior who served under King Arthur and survived the Battle of Camlan through his own physical strength. Following his military life, he transitioned to religious service, reportedly serving as an abbot on Bardsey Island. He is also associated with the founding of Llandderfel, a site named in his honor.
Life and legend
Welsh traditions suggest Derfel was a son of the legendary king Hywel. After his time as a warrior, he lived as a hermit before joining the monastery at Llantwit. He eventually succeeded his cousin, Saint Cadfan, as the leader of the community on Ynys Enlli. He is said to have passed away on Bardsey Island in 660.
Veneration
He was traditionally honored at several sites, including Llandderfel, where a wooden statue of him once stood. This image often depicted him as a mounted warrior in armor rather than a monk. During the English Reformation, the statue was dismantled by order of Thomas Cromwell, though a piece representing his horse remains preserved today.