Mordred�s role within Arthurian literature becomes set with Geoffrey of Monmouth�s interpretation and his character with the Vulgate Cycle�s portrayal of him. once Geoffrey�s influential history declares Mordred a traitor, he will be one ever more in popular literature; Mordred�s treachery becomes one of the immovable plot points of the legend. The Vulgate Cycle keeps Arthur�s sister as the mother of Mordred, but changes the father to Arthur himself, making Mordred born of incest and necessarily messed-up and evil. The religious implications of the time paint him as a devil, because the authors wanted to paint Camelot as a society that could not stand due to its un-Christian aspects. Mordred�s character gets a boost in modern literature
