In "The Dream of Rhonabwy", he plays a game of chess against Arthur while Rhonabwy looks on and the Saxons prepare to fight. The outlines of Chrétien's "Yvain, the Knight of the Lion" and "Owain, or the Lady of the Fountain" are essentially the same; Owain hears of a magical storm-making fountain in the forest of Brocéliande and seeks it out, only to find it defended by an excellent knight. He defeats this warrior and marries his wife Laudine, but forsaking his marital duties for knightly exploits, he loses her love. With the aid of a lion he rescues from a serpent, he completes several adventures and is eventually reunited with his lady. He appears in most of the later accounts, his importance indicated by his close friendship with Gawain and the passage in the "Mort Artu" section of the Lancelot-Grail cycle where he is one of the last knights to die before Arthur.