Uzun Hassan
Uzun Hassan's initial capital was at Amida (modern Diyarbakır), which he gained from his brother Jihangir in 1452. From there, Uzun Hassan embarked on a campaign of expanding his territory at the expense of the rival Kara Koyunlu dynasty. Hasankeyf was one of the first towns to acknowledge Uzun Hassan's suzerainty, in an agreement signed by the Ayyubid emir in 1455. While Uzun Hassan managed to extend his influence throughout much of the Diyar Bakr and Jazira during the 1450s, the Ayyubid emir of Hasankeyf rebelled in 1460, attempting to take control of Siirt. Uzun Hassan responded by attacking Hasankeyf in 1461; he finally captured the town in 1462 after a six-month siege. It seems that Uzun Hassan then appointed his son Zeynel as governor of Hasankeyf.