He is probably most famous as the protagonist in the Welsh tale Geraint and Enid, where he becomes the lover of Enid. Geraint and Enid is one of the three Welsh Romances associated with the Mabinogion. Its story closely parallels the French writer Chrétien de Troyes' Erec and Enide. Some scholars feel both works derived from a common lost source, but most believe the Welsh version derives directly or indirectly from Chrétien. In this case, the renowned figure of Geraint would have been added to the story to suit Welsh audiences unfamiliar with Chrétien's protagonist. Geraint and Enid was reworked by Alfred, Lord Tennyson into the poems The Marriage of Geraint and Geraint and Enid, part of his Idylls of the King.