Coronation
Crowns Charlemagne as Roman emperor of the Holy Roman Empire
Historical biography archive · Updated 2026-11-03
Leo III Biography and Timeline
Follow Leo III through 9 dated historical records for Italy.
Leo III, historical timeline
A chronological timeline drawn from matching World History Database records.
9Distinct records
1 of 1Page
800–816Years on this page
800
Holy Roman Emperor
Revives the title of Holy Roman Emperor in Western Europe after more than three centuries
803
Diocese of Lichfield
Leo restores the Diocese of Lichfield
Rule of Northumbria
Leo helps restore King Eardwulf of Northumbria
808
Rule of Corsica
Leo commits Corsica to Charlemagne for safe-keeping because of Muslim attacks, originating from Al-Andalus
809
Council of Aachen
Leo forbids the addition of Filioque to the Nicene Creed, when asked to confirm the decision of a Council of Aachen
Rule of Corsica
Corisica is captured by Muslim forces
Rule of Sardinia
Sardinia is captured by Muslim forces
816
Death of Leo III
Death of Leo III
Records, sources and methodology
These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.