Bayezid I ( ota, بايزيد اول, tr, I. Bayezid), also known as Bayezid the Thunderbolt ( ota, link=no, یلدیرم بايزيد, tr, Yıldırım Bayezid, link=no; – 8 March 1403) was the
Ottoman Sultan
The sultans of the Ottoman Empire ( tr, Osmanlı padişahları), who were all members of the Ottoman dynasty (House of Osman), ruled over the transcontinental empire from its perceived inception in 1299 to its dissolution in 1922. At its he ...
from 1389 to 1402. He adopted the title of ''Sultan-i Rûm'', ''
Rûm
Rūm ( ar, روم , collective; singulative: Rūmī ; plural: Arwām ; fa, روم Rum or Rumiyān, singular Rumi; tr, Rûm or , singular ), also romanized as ''Roum'', is a derivative of the Aramaic (''rhπmÈ'') and Parthian language, Par ...
'' being an old Islamic name for the
Roman Empire
The Roman Empire ( la, Imperium Romanum ; grc-gre, Βασιλεία τῶν Ῥωμαίων, Basileía tôn Rhōmaíōn) was the post- Republican period of ancient Rome. As a polity, it included large territorial holdings around the Medite ...
. He decisively defeated the Crusaders at
Nicopolis
Nicopolis ( grc-gre, Νικόπολις, Nikópolis, City of Victory) or Actia Nicopolis was the capital city of the Roman province of Epirus Vetus. It was located in the western part of the modern state of Greece. The city was founded in 29 ...
(in modern Bulgaria) in 1396. Bayezid unsuccessfully besieged
Constantinople
la, Constantinopolis ota, قسطنطينيه
, alternate_name = Byzantion (earlier Greek name), Nova Roma ("New Rome"), Miklagard/Miklagarth ( Old Norse), Tsargrad ( Slavic), Qustantiniya (Arabic), Basileuousa ("Queen of Cities"), Megalopolis ( ...
and later was defeated and captured by
Timur
Timur ; chg, ''Aqsaq Temür'', 'Timur the Lame') or as ''Sahib-i-Qiran'' ( 'Lord of the Auspicious Conjunction'), his epithet. ( chg, ''Temür'', 'Iron'; 9 April 133617–19 February 1405), later Timūr Gurkānī ( chg, ''Temür Kür ...
at the
Battle of Ankara
The Battle of Ankara or Angora was fought on 20 July 1402 at the Çubuk plain near Ankara, between the forces of the Ottoman Sultan Bayezid I and the Emir of the Timurid Empire, Timur. The battle was a major victory for Timur, and it led to th ...
in 1402 and died in captivity in March 1403, triggering the
Ottoman Interregnum
The Ottoman Interregnum, or the Ottoman Civil War ( 20 July 1402 – 5 July 1413; tr, Fetret Devri, , Interregnum Period), was a civil war in the Ottoman