Birth of Constantine XI Palaiologos
Birth of Constantine XI Palaiologos, eighth of ten children of Manuel II Palaiologos and Helena Dragas, the daughter of the Serbian prince Constantine Dragas of Kumanovo
Role range: 1448-1453
Historical biography archive · Updated 2026-11-03
Constantine XI Biography and Timeline
Follow Constantine XI through 12 dated historical records for Roman Empire.
Constantine XI, historical timeline
A chronological timeline drawn from matching World History Database records.
12Distinct records
1 of 1Page
1405–1453Years on this page
1405
1428
Marriage
Constantine XI marries Maddalena Tocco, niece of Carlo I Tocco of Epirus, 1st marriage
Role range: 1448-1453
1429
Marriage
Constantine XI marries Caterina Gattilusio, daughter of the Genoese lord of Lesbos, 2nd marriage
Role range: 1448-1453
1443
Capture of Athens
Invades the Duchy of Athens from Morea, conquering Thebes and Athens and forcing its Florentine Duke to pay him tribute, the triumph is short-lived, as the Ottomans intervene & force him back to Morea
Role range: 1448-1453
Capture of Thebes
Invades the Duchy of Athens from Morea, conquering Thebes and Athens and forcing its Florentine Duke to pay him tribute, the triumph is short-lived, as the Ottomans intervene & force him back to Morea
Role range: 1448-1453
Despotes of Morea
Constantine became the Despotes of Morea (the Medieval name for the Peloponnesus), which he rules from the palace in Mistra
Role range: 1448-1453
Invasion of Greece
Invades the Duchy of Athens from Morea, conquering Thebes and Athens and forcing its Florentine Duke to pay him tribute, the triumph is short-lived, as the Ottomans intervene & force him back to Morea
Role range: 1448-1453
Succession
Constantine became the Despotes of Morea (the Medieval name for the Peloponnesus), which he rules from the palace in Mistra
Role range: 1448-1453
1448
Succession
Succeeds as Emperor of the Eastern Roman Empire, the last Emperor of the Byzantine Empire. Ottoman Sultan Murad II to arbitrates between Constantine & his brother Demetrios Palaiologos & decides in favour of Constantine
Role range: 1448-1453
1449
Coronation
Crowned as Emperor of the Eastern Roman Empire
Role range: 1448-1453
1452
Council of Florence
The union between the Roman & Greek Churches is overwhelmingly rejected by his subjects and it dangerously estranged him from his Chief Minister and military commander, the Megas Doux Loukas Notaras
Role range: 1448-1453
1453
Death of Constantine XI
Death of Constantine XI, defending Constantinople from Mehmed II
Role range: 1449-1453
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.