Caradoc of Llancarfan was a Welsh cleric and author who was associated with Llancarfan in Wales during the 12th century. He is generally accepted to be the author of a Life of Gildas and of a Life of Saint Cadog.Gildas (c. 500 – 570) was a 6th-century British cleric. He is one of the best-documented figures of the Christian church in the British Isles during this period. His renowned learning and literary style earned him the designation Gildas Sapiens (Gildas the Wise). His work De Excidio et Conquestu Britanniae, which contains narratives of the post-Roman history of Britain, is the only substantial source for history of this period written by a near-contemporary. He was ordained in the Church and, in his works, favours the monastic ideal.