 Not far from Llantwit Fawr stood Cadoc's foundation of Llancarfan, founded in the latter part of the fifth century.The son of Gwynllyw, a prince of South Wales, who before his death renounced the world to lead an eremitical life.Cadoc followed his father's example and received the religious habit from St. Tathai, an Irish monk, superior of a small community at Swent near Chepstow, in Monmouthshire.