|also called ÇELEBI SULTAN MEHMED (d. May 26, 1421, Edirne, Ottoman Empire), Ottoman sultan who reunified the dismembered Ottoman territories following the defeat of Ankara (1402). He ruled in Anatolia and, after 1413, in the Balkans as well.|
Tamerlane), victorious over the Ottoman sultan Bayezid I at Ankara, restored to the Turkmen their principalities that had been annexed by the Ottomans and divided the remaining Ottoman territory among three of Bayezid's sons. Thus Mehmed ruled in Amasya, Isa in Bursa, and Suleyman in Rumelia (Balkan lands under Ottoman control). Mehmed defeated Isa and seized Bursa (1404-05), then sent another brother, Musa, against Süleyman. Műsa was victorious over Süleyman (1410) but then declared himself sultan in Edirne and undertook the reconquest of the Ottoman territories in Rumelia. Mehmed, assisted by the Byzantine emperor Manuel II Palaeologus, defeated Műsa in 1413 at Camurlu (in Serbia) and declared himself sultan in both Anatolia and Rumelia, with his capital at Edirne.
During his reign Mehmed pursued a policy of relative restraint in the Balkans, although he reduced Walachia to vassal status (1416), made territorial gains in Albania (1417), and conducted raids into Hungary. In Anatolia he reestablished Ottoman control over much of the western provinces and reduced the Karaman principality (in Konya) to submission. He was successful in crushing a socio-religious revolt (1416) inspired by Bedreddin, who had been chief judge under Musa. Mehmed also overcame a threat from a pretender, who claimed to be his brother, Mustafa.
In 1421 Sultan Mehmed died of 32 years of age. His corpse was brought to Bursa and interred in the Green Tomb (Yeshil Turbe).
He had 5 sons, Moustafa Chelebi, Murad II, Ahmed, Yusuf, Mahmoud, and two daughters whose names were Fatima and Seljuk Khatun.