Pope St. Leo III
750 CE–816 CE · Rome
Leo III is remembered above all for crowning Charlemagne 'Emperor of the Romans' on Christmas Day, 800—an act that revived the Western imperial title and bound the papacy to a new Frankish-led order, while planting seeds of later conflict over who made emperors. Of humble Roman background, Leo faced fierce hostility from the Roman aristocracy: in 799 enemies physically assaulted him, and he fled to Charlemagne's court at Paderborn before being restored. He cleared himself by oath of the charges against him. Cautious in doctrine, he resisted inserting the Filioque clause into the Creed despite Frankish pressure, displaying notable diplomatic prudence.
Did you know?
The pope who placed the crown on Charlemagne
Pope Leo III crowned Charlemagne “Emperor of the Romans” in St. Peter's Basilica on Christmas Day, 25 December 800 — an act Western tradition marks as the rebirth of a Roman imperial title in the West.
How we know
Pope Leo III (papacy 795–816) crowned Charlemagne emperor at St. Peter's Basilica in Rome on 25 December 800.
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RomeרומאItaly
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Rome in this era
Between the 8th and 15th centuries Rome was the seat of the popes and capital of the Papal States, which grew from the Frankish king Pepin's grant of 756; Charlemagne was crowned emperor in St Peter's in 800. The city shrank far below its ancient size, and from 1309 to 1377 the popes resided at Avignon before returning to Rome.
About Rome
Rome, on the Tiber in central Italy, grew from an Iron Age settlement into the capital of the Roman Republic and then of an empire that by the 1st century CE ruled the whole Mediterranean. Its Jewish community, attested from the 2nd century BCE, is among the oldest in Europe. Christian tradition holds that the apostles Peter and Paul died there, and the city became the seat of the popes. After the Western Empire ended in 476 it passed to Gothic kings, to Byzantium and then to papal rule as capital of the Papal States, until it became the capital of unified Italy in 1871. Vatican City, independent since 1929, lies within it.
In Rome at the same time
Pope St. Zachary, Pope Adrian I, Pope St. Paul I, Pope Stephen II, Pope Stephen III, Alcuin of York
In the same place & time
Sages whose lives overlapped with Pope St. Leo III’s in the same cities, drawn from their recorded journeys.
In the same tradition
Pope St. Zachary, Pope Adrian I, Pope St. Paul I, Pope Stephen II, Pope Stephen III, Alcuin of York, Pope Stephen IV, Pope St. Leo IV, Pope Adrian II, Pope Formosus
The world in their lifetime
Thinkers and teachers of other traditions whose lives overlapped with Pope St. Leo III’s — a glimpse of the wider world they lived in. Drawn purely from recorded birth and death years.
Works
No works attributed in the corpus yet.