Murad IV Ghazi (July 26/27, 1612 – February 8/9, 1640) was the Sultan of the Ottoman Empire from 1623 to 1640, known both for restoring the authority of the state and for the brutality of his methods. Murad IV was born in Istanbul, the son of Sultan Ahmed I (1603–17) and the ethnic Greek Valide Sultan Kadinefendi Kösem Sultan (also known as Mahpeyker), originally named Anastasia. Brought to power by a palace conspiracy in 1623, he succeeded his mad uncle Mustafa I (1617–18, 1622–23). He was only eleven when he took the throne. He married Aisha, without issue.