The history books tell us that Piers Gaveston was many things: arrogant, ambitious, avaricious, flamboyant, extravagant, reckless, brave, and daring, indiscreet, handsome, witty, vivacious, vain, and peacock-proud, a soldier and champion jouster, the son of a condemned witch, who used witchcraft, his own wicked wiles, and forbidden sex to entice and enslave King Edward II, alienate him from his nobles and advisors, and keep him from the bed of his...