The Columbia Encyclopedia, Sixth Edition. 2001-07.
Mustafa IV
17781808, Ottoman sultan (18078), son of Abd al-Hamid I. He was raised to the throne by the reactionary Janissaries who had deposed Mustafas cousin, Selim III, because they opposed his attempted reforms. When a Turkish army marched on the capital to restore Selim, Mustafa had him murdered, but the rebels killed Mustafa and placed his brother, Mahmud II, on the throne.