After the death of Genghiz Khan the kingdom was divided amongst a number of feudal landlords until the conquest of Persia by Hulakoo Khan, the grandson of Ghengiz Khan (d.1226), in 1230. Persia was then ruled by the Il-Khans (literally the Lords of the world), of whom the most important from an architectural point of view was Oljeitu Khan (also known as Sultan Muhammad Khoda-bandeh - the slave of God) whose stucco prayer niche in the Masjed-e-Jomeh in Isfahan, shown above, is an impressive reminder of his interest in art. He was also the first ruler to espouse the Shi'ite belief.
He was succeeded by his infant son, Abu Sayed Behauder, and during his minority the country was plagued by disputes amongst the factious nobles. He died in 1335 of fever in Shirvan and another period of anarchy followed his death which was terminated by the arrival and savage conquest of Timur (1336-1404) to whose successors we give the name Timurids. During this period the governorship of Isfahan was given first to Sharaf Al-Din Al-Muzaffar, and then in 1314 to his son Muzbarriz Al-Din Muhammad. This in turn gave rise to a brief period of Muzaffarid rule in Isfahan