The Columbia Encyclopedia, Sixth Edition. 2001-07.
Mustafa III
171773, Ottoman sultan (175773), son of Ahmed III. He succeeded his cousin Osman III to the throne of the Ottoman Empire (Turkey). The chief event of his reign was the war of 176874 with Russia (see Russo-Turkish Wars), which ended disastrously for Turkey (see Kuchuk Kainarji, Treaty of). His brother Abd al-Hamid I succeeded him in Jan., 1774.