The last male of the Ottoman house would not leave his room when told he was sultan, and eight years later his mother agreed to his deposition

Ibrahim, born in 1615, was the last of Ahmed I's sons to reach the throne. He grew up confined in the palace while his uncle Mustafa I was deposed, his brother Osman II was killed, and his brother Murad IV had their brothers Bayezid and Süleyman strangled in 1635 and Kasım executed in 1638. Murad's own sons died young, leaving Ibrahim the only male of the dynasty. One unconfirmed report says the dying Murad sought a fatwa to have him killed and their mother, Kösem Sultan, stopped it. When the grand vizier's messenger brought news of Murad's death, Ibrahim thought it was a trick to kill him and refused to leave his room. His mother persuaded him, he looked at his brother's body, and he took the throne; the allegiance ceremony was held on 9 February 1640. He fathered sons, among them the future Mehmed IV, and the dynasty survived through him. On 8 August 1648 he was deposed. His six-year-old son was enthroned, and Kösem consented. On 18 August 1648 the executioner Kara Ali strangled him in his room. He was buried in the tomb of Mustafa I beside the Hagia Sophia. Wikipedia says Kösem watched the execution from a window^†.