Restoration
Helps Justinian regain the throne in the Easter Roman Empire
Role range: 0717-0741
Historical biography archive · Updated 2026-11-03
Leo III Biography and Timeline
Follow Leo III through 9 dated historical records for Roman Empire.
Leo III, historical timeline
A chronological timeline drawn from matching World History Database records.
9Distinct records
1 of 1Page
705–750Years on this page
705
717
Succession
Succeeds as Emperor of the Eastern Roman Empire
Role range: 0717-0741
Coup
Overthrows Theodosius
Role range: 0717-0741
Coup
Overthrows Theodosius
Role range: 0717-0741
718
Siege of Constantinople
Compels Maslamah ibn Abd al-Malik to give up the siege of Constantinople. Checks Arab expansion into southeastern Europe
Role range: 0717-0741
726
Reform of Government
Issues the Ecloga, a revised legal code
Role range: 0717-0741
727
Rebellion of of idolatry causes
The abolition of idolatry causes rebellion in Italy. The abolition of idolatry causes rebellion in Greece
Role range: 0717-0741
739
Battle of Akroinon
Defeats the Arabs
Role range: 0717-0741
750
Birth of Leo III
Birth 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.