Ibrahim of the Ottoman Empire

Born in Constantinople in 1617, Ibrahim was the last son of Sultan Ahmed I and Kösem Sultan, an ethnically Greek woman originally named Anastasía. He came to the throne in 1640 and ruled until 1648. The nickname "Deli İbrahim" — Ibrahim the Mad — followed him into history, tied to reports of his mental condition and behavior. Historian Scott Rank points out that opponents spread rumors of the sultan's insanity to undermine him. Some historians now argue he was less mad than simply incompetent. His reign ended after eight years when he was deposed, then executed in August 1648.