Siege of Constantinople (1411)

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Siege of Constantinople
Part of the Ottoman Interregnum and Byzantine-Ottoman wars.
Constantinople in 1422; the oldest surviving map of the city.
Date 1411 Location Constantinople (modern-day Istanbul, Turkey) 41°0′44.064″N 28°58′33.665″E / 41.01224000°N 28.97601806°E / 41.01224000; 28.97601806 Result Byzantine victory Siege lifted
Belligerents
Byzantine Empire	Ottoman Empire
Commanders and leaders
Manuel II Palaiologos	Musa Çelebi
class=notpageimage| Location within Istanbul Show map of Istanbul Siege of Constantinople (1411) (Mediterranean) Show map of Mediterranean Siege of Constantinople (1411) (Black Sea) Show map of Black Sea

The siege of Constantinople of 1411 occurred during the Ottoman Interregnum, or Ottoman Civil War,^[1] (20 July 1402 – 5 July 1413), when chaos reigned in the Ottoman Empire following the defeat of Sultan Bayezid I by the Central Asian warlord Timur. Although Mehmed Çelebi was confirmed as sultan by Timur after the Battle of Ankara, his brothers İsa Çelebi, Musa Çelebi, Süleyman Çelebi, and later, Mustafa Çelebi, refused to recognize his authority, each claiming the throne for himself.^[2] A civil war was the result. The Interregnum lasted until the Battle of Camurlu on 5 July 1413, when Mehmed Çelebi emerged as victor in the strife, crowned himself sultan Mehmed I, and restored peace to the empire.