 The Principality of Antioch was one of the earliest Crusader States , founded in 1098 during the First Crusade . At the time of the Mongol advance , it was under the rule of Bohemond VI . Under the influence of his father @-@ in @-@ law , Hethum I , Bohemond too submitted Antioch to Hulagu in 1260 . A Mongol representative and a Mongol garrison were stationed in the capital city of Antioch , where they remained until the Principality was destroyed by the Mamluks in 1268 . Bohemond was also required by the Mongols to accept the restoration of a Greek Orthodox patriarch , Euthymius , as a way of strengthening ties between the Mongols and the Byzantines . In return for this loyalty , Hulagu awarded Bohemond all the Antiochene territories which had been lost to the Muslims in 1243 . However , for his relations with the Mongols , Bohemond was also temporarily excommunicated by Jacques Pantaléon , the Latin Patriarch of Jerusalem , though this was lifted in 1263 . 
