Analysis of information sources in references of the Wikipedia article "السلطانة كوسم" in Arabic language version.
When such a son became sultan, his slave mother would become the most powerful woman in the Ottoman Empire. The Macedonian slave Kösem earned this distinction
{{استشهاد بكتاب}}: صيانة الاستشهاد: أسماء متعددة: قائمة المؤلفين (link)His mother, Valide Kosem, said to be the most powerful woman in the history of the dynasty, ruled in his name.
Maypeyker Sultan, better known as Kösem Sultan, is remembered by the Turks as the most powerful woman of her time
{{استشهاد بكتاب}}: صيانة الاستشهاد: أسماء متعددة: قائمة المؤلفين (link)Kosem [qv] Mahpeyker, a woman of Greek origin (Anastasia, 1585–1651)
Kosem was said to have been the daughter of a Greek priest of one of the Aegean islands, probably captured during one of the Ottoman-Venetian maritime campaigns. Her name was Anastasia but was changed after her conversion, no doubt on her admission to the palace, to Mâh-Peyker (Moon-Shaped), and later by Sultan Ahmet to Kosem
Many of the women of the harem were non-Muslim, for example Kösem Sultan was born in 1590 as Anastasia. The Governor of Bosnia had sent her to the Sultan. She was the wife of Ahmet I (1603–17), and the mother of Murat IV (1623–40), and of Ibrahim I (1640–8)
{{استشهاد ويب}}: |url= بحاجة لعنوان (مساعدة) والوسيط |title= غير موجود أو فارغ (من ويكي بيانات) (مساعدة)His mother, Valide Kosem, said to be the most powerful woman in the history of the dynasty, ruled in his name.
Kosem [qv] Mahpeyker, a woman of Greek origin (Anastasia, 1585–1651)
Kosem was said to have been the daughter of a Greek priest of one of the Aegean islands, probably captured during one of the Ottoman-Venetian maritime campaigns. Her name was Anastasia but was changed after her conversion, no doubt on her admission to the palace, to Mâh-Peyker (Moon-Shaped), and later by Sultan Ahmet to Kosem
Kosem was said to have been the daughter of a Greek priest of one of the Aegean islands, probably captured during one of the Ottoman-Venetian maritime campaigns. Her name was Anastasia but was changed after her conversion, no doubt on her admission to the palace, to Mâh-Peyker (Moon-Shaped), and later by Sultan Ahmet to Kosem