Geraint son of Erbin through a variety of subsequent sources. Later genealogies associate him with southwestern Britain and South Wales in the late 6th century. The early poem "Y Gododdin" mentions a "Geraint before the South", conceivably a reference to Geraint mab Erbin. However, Geraint achieved his greatest fame as the hero of the prose romance "Geraint and Enid", a fictional tale that follows the narrative of Chrétien de Troyes' French work "Erec and Enide". "Geraint son of Erbin" makes heavy use of repetition in celebrating Geraint's deeds at Llongborth, which may be identified with Langport, Somerset, or Portsmouth, Hampshire though "llongborth" may refer
Morgan le Fay of Owain mab Urien in Welsh literature, and Morgan would be assigned this role in later French literature, this first continental association between Sir Ywain and Morgan does not imply they are son and mother; she is first mentioned as Ywain's mother in the early 13th-century Breton lai "Tyolet". The Middle Welsh Arthurian tale "Geraint son of Erbin", either based on Chrétien's "Erec and Enide" or derived from a common source, mentions King Arthur's chief physician named Morgan Tud. It is believed that this character, though considered a male in "Gereint", may be derived from Morgan le Fay, though this