Leo III was the pope of the Catholic Church and leader of the Papal States from 795 until his death in 816. Born in Rome around 750, he served as a cardinal-priest under Adrian I before his own election. His pontificate was marked by a close alliance with the Frankish ruler Charlemagne, whom he famously crowned emperor in 800. Despite facing violent physical attacks and legal accusations from political rivals, Leo maintained his position through the protection of the Carolingian dynasty.
Life and reign
After being elected in late 795, Leo sought the protection of Charlemagne to secure the Holy See. This relationship proved vital when enemies attempted to assassinate him in 799, leaving him injured. Following a council in Rome, he cleared his name of various charges. His leadership included managing disputes within the English episcopate and defending specific theological doctrines, such as the procession of the Holy Spirit, by displaying the creed on silver shields in Rome.
Veneration and legacy
Leo III is recognized as a saint in the Catholic, Anglican, and Orthodox traditions. He was canonized by Clement X, and his name was included in the Roman Martyrology in 1673. His feast day is observed on June 12. While his remains were once shared in a tomb with other popes named Leo, he was eventually granted his own chapel after his relics were separated from his predecessors.