Pope Leo III

Pope Saint Leo III
Bishop of Rome
Mosaic at Triclinium Leoninum
Church	Holy Roman Church
Papacy began	27 December 795
Papacy ended	12 June 816
Predecessor	Adrian I
Successor	Stephen IV
Personal details
Born	750 Rome, Exarchate of Ravenna, Eastern Roman Empire
Died	12 June 816(816-06-12) (aged 65–66) Rome, Papal States
Previous post(s)	Cardinal-Priest of Santa Susanna
Sainthood
Feast day	12 June
Venerated in	Roman Catholic Church, Eastern Orthodox Church[1]
Other popes named Leo

Pope Leo III (died 12 June 816) was 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 by most people in Constantinople, although the Byzantines, occupied with their own defenses, were in no position to offer much opposition to it.