Claim: The Ilkhanate was ruled by Mahmud Ghazan for twenty years.
Evidence: Later Ilkhanate rulers , beginning with Ghazan in 1295 , would convert to Islam.
Mahmud Ghazan -LRB- 1271 -- 11 May 1304 -RRB- -LRB- , , sometimes referred to as Casanus by Westerners -RRB- was the seventh ruler of the Mongol Empire 's Ilkhanate division in modern-day Iran from 1295 to 1304.