Giles of Rome's On Ecclesiastical PowerGiles of Rome was the archbishop of Bourges and a loyal champion of Pope Boniface VIII during the Franco papal crisis of 12961303. On Ecclesiastical Power was written at the height of the conflict between Pope Boniface VIII and King Philip IV of France and represents the earliest fully articulated and philosophically developed defense of the "hierocratic" ideology of the medieval papacy. Giles's theory that all government must be legitimized by the