Catholic saint biography

St. Leo III

Lived:
Died 816 — Rome, Italy

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Artwork depicting Leo III
Artwork depicting Leo III. Various: Original: Unknown artist Restoration: Ferdinando Fuga (1743) · Source ↗ · Public domain · Resized for the web; no cropping or retouching.

Biography

Leo III became pope in 795 and faced serious opposition from members of the Roman nobility. A violent attack during a procession formed part of those conflicts. He sought assistance from Charlemagne, whose relationship with Rome became a major element of the political circumstances surrounding his pontificate.

Leo crowned Charlemagne emperor and also took positions in disputes about the language used in the creed. He resisted inserting the Filioque into the text then recited at Rome, despite its use elsewhere in the West. He died in 816, after a pontificate in which diplomacy and doctrinal questions were closely entangled with Roman political conflict.

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Sources and further reading

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Individual Catholic institutional source review; original concise factual summary. AI-assisted comparison of the individual institutional biography, recognition notice, all 685 archived and canonical baseline identities, source identity keys and alternate names. Individually identified person; distinct from group observances and related people. Original English prose; no qualified human review or ecclesiastical approval is claimed.

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