The High Book of the Grail (Perlesvaus) is one of the medieval Arthurian romances, standing apart from the main tradition represented by the great romance cycles on which Malory based his work. Written in the first half of the 13th century, it represents a different view of the legend of the Holy Grail from that found in Wolfram von Eschenbach or the French Quest of the Holy Grail, though all derive from Chretien's Perceval; the unknown author adds a much greater religious emphasis and a desire to glorify crusading chivalry for the secular adventures of Arthur, Perceval and Lancelet. The framework of the romance is the struggle of Arthur and his knights to impose, by force, the New Law of Christianity in place of the Old Law. This view of the Arthurian world should be of interest to students of medieval literature, Arthurian enthusiasts and to historians interested in the world of chivalry and its attitudes.