Pope Leo III
Pope Leo III (Latin: Leo; fl. 12 June 816) was the bishop of Rome and ruler of the Papal States from 26 December 795 to his death. Protected by Charlemagne from the supporters of his predecessor, Adrian I, Leo subsequently strengthened Charlemagne's position by crowning him emperor. The coronation was not approved in Constantinople, although the Byzantines, occupied with their own defenses, were in no position to offer much opposition.
Pope Leo III-1