St Leo III (26 dic 795 año – 12 jun 816 año)

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Rome, Exarchate of Ravenna, Eastern Roman Empire
96th
(Eastern) Roman citizen, later the sovereign of the independent Papal States. Was of Roman ethnicity. Crowned Emperor Charlemagne on Christmas Day in 800, thereby initiating what would become the Holy Roman Empire, requiring the imprimatur of the pope for its rulers' legitimacy.

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