Mehmed VI (
Meḥmed-i sâdis,
Vahideddin, or ), who is also known as
Şahbaba (meaning "Emperor-father") among his relatives, (14 January 1861 – 16 May 1926) was the 36th and last Sultan of the
Ottoman Empire, reigning from 1918 to 1922. The brother of
Mehmed V, he succeeded to the throne as the eldest male member of the
House of Osman after the 1916 suicide of
Abdülaziz's son
Yusuf Izzettin Efendi, the heir to the throne. He was girded with the
Sword of Osman on 4 June 1918, as the thirty-sixth
padishah. His father was Sultan
Abdülmecid I and mother was
Gülüstü (1831 – May 1861), an ethnic
Abkhazian, daughter of Prince Tahir Bey Çaçba and his wife Afişe Lakerba, originally named Fatma Çaçba. Mehmed was removed from the throne when the
Ottoman sultanate was abolished in 1922.