Ahmad Niyaltigin was the treasurer of a sultan who rose to power by seizing what from his younger twin?
Ahmad Niyaltigin Ahmad Niyaltigin (Persian: ‎ ‎ ) was a treasurer of Sultan Mahmud Ghaznavi and later of his son Sultan Mas'ud Ghaznavi. Sultan Masud appointed him governor of Punjab region in 1033. Ahmad Niyaltigin with small detachment of soldiers raided Varanasi, before withdrawing back to Punjab.
Nizam al-Mulk Abu Ali Hasan ibn Ali Tusi (April 10, 1018 – October 14, 1092), better known by his honorific title of Nizam al-Mulk (Persian: نظام‌الملک‎ ‎ , "Order of the Realm" ) was a Persian scholar and vizier of the Seljuq Empire. He held near absolute power for 20 years after the assassination of Alp Arslan in 1072. One of his most important legacies was founding madrasas in cities throughout the Seljuk Empire. These were called "nezamiyehs" after him. He wrote "Siyasatnama" (""Book of Government""), a political treatise that uses historical examples to discuss justice, effective rule, and the role of government in Islamic society.