Murad IV, Ottoman Sultan (d. 1640)
Murad IV (Ottoman Turkish: مراد رابع, Murād-ı Rābiʿ; Turkish: IV. Murad, 27 July 1612 – 8 February 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 Constantinople, the son of Sultan Ahmed I (r. 1603–17) and Kösem Sultan. He was brought to power by a palace conspiracy in 1623, and he succeeded his uncle Mustafa I (r. 1617–18, 1622–23). He was only 11 when he ascended the throne. His reign is most notable for the Ottoman–Safavid War (1623–1639), of which the outcome would partition the Caucasus between the two Imperial powers for around two centuries, while it also roughly laid the foundation for the current Turkey–Iran–Iraq borders.