Perceval (/ˈpɜːrsɪvəl/, also written Percival, Parzival, Parsifal), alternatively called Peredur (Welsh pronunciation: [pɛˈrɛdɨr]), is a figure in the legend of King Arthur, often appearing as one of the Knights of the Round Table. First mentioned by the French author Chrétien de Troyes in the late 12th century tale Perceval, the Story of the Grail, he is best known for being the original hero in the quest for the Grail before being replaced in later literature by Galahad, first introduced in the early 13th century.