Kösem Sultan (Ottoman Turkish: كوسم سلطان, IPA: [cøsem sultan] ) (c. 1589[1] – 2 September 1651) – also known as Mahpeyker Sultan[7][5] (Turkish pronunciation: [mahpejke sultan]; Māh-peyker) – was one of the most powerful women in Ottoman history.[8] Kösem achieved power and influenced the politics of the Ottoman Empire when she became Haseki Sultan as favourite consort and later legal wife of Ottoman Sultan Ahmed I (r. 1603–1617) and Valide Sultan[7] as mother of Murad IV (r. 1623–1640) and Ibrahim (r. 1640–1648), and grandmother of Mehmed IV (r. 1648–1687). She was one of the prominent figures during the Sultanate of Women.
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