Ahmad Niyaltigin was the treasurer of a sultan who rose to power by seizing what from his younger twin?
Mas'ud I of Ghazni Mas'ud I of Ghazni (Persian: مسعود غزنوی‎ ‎ ), known as Amīr-i Shahīd (امیر شهید ; "the martyr king")(998 – 17 January 1040), was "sultan" of the Ghaznavid Empire from 1030 to 1040. He rose to power by seizing the Ghaznavid throne from his younger twin Mohammad, who had been nominated as the heir upon the death of their father Mahmud of Ghazni. His twin was shortly blinded and imprisoned. However, when much of Mas'ud's western domains had been wrested from his control, his troops rebelled against him and reinstated Mohammad to the throne.
Haseki sultan Haseki Sultan (Ottoman Turkish: خاصکى سلطان‎ , "Ḫāṣekī Sulṭān;" ] ) was the imperial title used for the chief consort of an Ottoman Sultan. Haseki sultan meant "chief consort" or "single favorite" of the sultan. In later years, the meaning of the title changed to "imperial consort". Hürrem Sultan, principal consort of Suleiman the Magnificent, was the first holder of this title.