Dominican missionaries to the Ilkhanate included Ricoldo of Montecroce and Barthelemy of Bologna, who later became the bishop in the Ilkhanate capital of Maragha. By the year 1300, there were numerous Dominican and Franciscan convents in the Il-Khanate. About ten cities had such institutions, including Maragha, Tabriz, Sultaniye, Tifflis, and Erzurum. To help with coordination, the Pope established an archbishop in the new capital of Sultaniye in 1318 in the person of Francon de Pérouse, who was assisted by six bishops. His successor in 1330 was Jean de Cor.Roux, ‘’Histoire de l’Empire Mongol’’, p. 439
