Analysis of information sources in references of the Wikipedia article "Kösem Sultan" in Indonesian 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
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
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
Then around 1608 Ahmet found a new favourite, a Greek girl named Anastasia, who had been captured on the island of Tinos and sent as a slave to the Harem, where she took the name of 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)
Kösem, who was of Greek origin. Orphaned very young, she found herself at the age of fifteen in the harem of Sultan Ahmed I.
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
