Noun
Italian pope from 795 to 816 who in 800 crowned Charlemagne emperor of the Romans (750-816)
Source: WordNetThis was followed in the east by the Ecloga of Leo III the Isaurian (740) and the Basilica of Basil I (878). Source: Internet
The armies of Ravenna and the Duchy of the Pentapolis mutinied, denouncing both Exarch Paul and Leo III, and overthrew those officers who remained loyal. Source: Internet