The Ilkhanate was ruled by Mahmud Ghazan for twenty years.
Mahmud Ghazan ( 1271 -- 11 May 1304 ) ( , , sometimes referred to as Casanus by Westerners ) was the seventh ruler of the Mongol Empire 's Ilkhanate division in modern-day Iran from 1295 to 1304 . The Ilkhanate , also spelled Il-khanate ( ایلخانان , Ilkhānān ; Хүлэгийн улс , Hulagu-yn Ulus ) , was established as a khanate that formed the southwestern sector of the Mongol Empire , ruled by the Mongol House of Hulagu . Later Ilkhanate rulers , beginning with Ghazan in 1295 , would convert to Islam .