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Historical person

John VIII Biography

Historical biography and chronological timeline for John VIII, based on 7 World History Database records associated with Roman Empire.

7 records1392–14487 events3 places

Chronological biography

1392

Birth of John VIII Palaiologos1392
House / House of Palaeologan · Emperor

Birth of John VIII Palaiologos, eldest son of Manuel II Palaiologos and Helena Dragas, the daughter of the Serbian prince Constantine Dragas

1422

Siege of Constantinople1422
House / House of Palaeologan · Emperor · Istanbul

Supervises the defense of Constantinople during a siege by Sultan Murad II

1423

Rule of Thessalonika1423
House / House of Palaeologan · Emperor · Thessalonika

Has to accept the loss of Thessalonika which his brother Andronikos has given to the Venetia

1425

Succession1425
House / House of Palaeologan · Emperor

Succeeds as Emperor of the Eastern Roman Empire

1439

Council of Florence1439
Religion / Roman Catholic Church · Emperor · Florence

To secure protection against the Ottomans, visit Pope Eugene IV and consents to the union of the Greek and Roman churches, which is ratified at the Council of Florence

Unification1439
Religion / Roman Catholic Church · Emperor · Florence

To secure protection against the Ottomans, visit Pope Eugene IV and consents to the union of the Greek and Roman churches, which is ratified at the Council of Florence

1448

Death of John VIII1448
House / House of Palaeologan · Emperor

Death of John VIII Palaiologos

Titles and roles

Emperor

Record provenance

This biography is assembled from World History Database records filtered by country and personal-name fields. Exact duplicate display records are removed. The database is an index rather than a complete narrative biography; formal research should verify entries against relevant primary or specialist sources.