The Byzantine Empire was greatly offended by this and tried to re-establish either a Greek patriarchate or a joint patriarchate. Though the Treaty of Devol in 1108 nominally restored a Greek patriarch, the treaty was never enforced. Under Manuel I Komnenos there was briefly a joint patriarchate when Antioch fell under Byzantine control, but for the most part there was only a Latin patriarch. The Byzantine Empire recognized this de facto control of the See of Antioch and the Latin Patriarch soon played a key role in solidifying ties between the Crusader states and the Byzantine Empire. This represented one of the sole instances of coordinated action by Byzantine and the Franks throughout the crusader period, and led to a number of joint political, diplomatic, military, and marriage alliances. The Latin Patriarch of Antioch was established to serve the Catholic members of the diocese and represent all Christians living in its territory and was one of the major ecclesiastical authorities in the Crusader states. Throughout the Crusader period both Greeks and Latins served under its hierarchy which included numerous suffragan bishops, abbots, cathedrals, monasteries, and churches under its ecclesiastical rule. Damascus quickly grew in dominance, eclipsing Antioch, and the Greek Patriarchate's seat was transferred there in 1342.