Election
Elected due to the influence of his cousin Emperor Henry III
Role range: 1048-1054
Historical biography archive · Updated 2026-11-03
Leo IX Biography and Timeline
Follow Leo IX through 12 dated historical records for Italy.
Leo IX, historical timeline
A chronological timeline drawn from matching World History Database records.
12Distinct records
1 of 1Page
1048–1054Years on this page
1048
Pope
Appointed Pope, Bruno of Egisheim
Role range: 1048-1054
1049
Marriage
Forbids Duke William to marry Matilda of Flanders
Role range: 1048-1054
Alliance Leo IX and Baldwin V
Creates an alliance with Baldwin V & threatens the Popes cousin Emperor Henry II
Role range: 1048-1054
1053
Battle of Civitella
The inhabitants of Civitate hand the Pope over to the Normans. Defeated 10 miles north west of San Severo by the Norman forces of Robert Guiscard
Role range: 1048-1054
Battle of Civitella
Robert Guiscard defeats a Papal Army in southern Italy
Role range: 1048-1054
Arrest of Leo IX
Captured by the Normans in battle & escorted to his palace at Benevento
Role range: 1048-1054
Arrest of Leo IX
The Normans pay homage & release Leo when he recognizes conquests in southern Italy
Role range: 1048-1054
Declaration of War
Declares war on the Normans in South Italy
Role range: 1048-1054
1054
Independence of Italy
After Byzantium fails to support the Pope the "Universal" Church splits
Role range: 1048-1054
Independence
After Byzantium fails to support the Pope the "Universal" Church splits
Role range: 1048-1054
Arrest of Leo IX
Returned to Rome after his recognition of the Norman conquests in Italy. Held by the Normans at Benevento
Role range: 1048-1054
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.