AlthoughThe History of the Holy Grail opens the Vulgate Cycle, it was added after the events described in Lancelot and The Quest of the Holy Grail were already an established part of the Arthurian story. It is, in Hollywood terms, a prequel', and relates the story of the Grail from its first appearance at the Crucifixion up to the point where it is placed by Alain, the Fisher King, in the castle of Corbenic, whose inhabitants then await the arrival...