Galahad, Sir, in British legend, the purest and noblest of King Arthur's knights, the only one to whom a vision of the Holy Grail was granted. The character of Sir Galahad is believed to have been added to the Arthurian legends by Walter de Map, a Welsh poet at the court of Henry II in the latter part of the twelfth century. According to his account Galahad was the son of Sir Lancelot and Elaine; in other legends he is represented as created by enchantment. In all the various tales based upon King Arthur and his round table Galahad is ever a type of ideal knighthood. He appears in Tennyson's Idylls of the King. Tennyson has also a well known poem entitled Sir Galahad. See IDYLLS OF THE KING; ARTHUR, KING; HOLY GRAIL. My good blade carves the casques of men My tough lance thrusteth sure, My strength is as the strength of ten, Because my heart is pure.