A manuscript in the hand of 18th-century literary forger Iolo Morganwg claimed he was the son of Saint Henwg of Llanhennock; but this is contrary to other tradition. In it he is said to have been educated in the school of Catwg, at Llanfeithin, in Glamorgan, which the historian Gildas also attended. Captured as a youth by Irish pirates while fishing at sea, he is said to have escaped by using a wooden buckler for a boat; he landed at the fishing weir of Elffin, one of the sons of Urien (all medieval Welsh sources, however, make Elffin the son of Gwyddno Garanhir). Urien made him Elffin's instructor, and gave Taliesin an estate. But once introduced to the court of the warrior-chief Taliesin became his foremost bard, followed him in his wars, and wrote of his victories.