The Columbia Encyclopedia, Sixth Edition. 2001-07.
Murad IV
1612?1640, Ottoman sultan (162340), nephew and successor of Mustafa I. He recovered (1638) Baghdad, which Shah Abbas I of Persia had seized. On his victory he sent an order to murder his brother Beyazid. Murad possessed prodigious strength and ruled with ruthless severity. The Greek patriarch Cyril Lucaris was another of his victims. Murad was succeeded by his brother Ibrahim (reigned 164048) and Ibrahims son Muhammad IV.