Patriarch of Antioch
The jurisdiction of the Latin patriarchs in Antioch extended over the three feudal principalities of Antioch, Edessa, and Tripoli. Towards the end of the twelfth century the island of Cyprus was added. In practice they were far more dependent upon the popes than their predecessors, the Greek patriarchs. After the fall of Antioch (1268) the popes still appointed patriarchs, who, however, were unable to take possession of the see. Since the middle of the fourteenth century they were only titular dignitaries. The title was last conferred in 1925. The recipient resided in Rome and was a member of the chapter of the basilica of St. Mary Major. The Basilica of St. Mary Major was the Antioch patriarchium, or papal major basilica assigned to the patriarch of Antioch, where he officiated when in Rome and near which they resided.
The seat of the patriarch of Antioch was one of the oldest and most prestigious in Christendom. At one time it was the principal city of Syria; the third largest city of the Roman Empire, after Rome and Alexandria. When the East-West Schism took place in 1054, the Greek patriarchs of Antioch, Jerusalem, and Alexandria sided with the patriarch of Constantinople.
After 1054, the See of Antioch came under the influence of the Byzantine Empire. As part of his grand strategy, the Byzantine Emperor Alexios I Komnenos sought to utilize the military elan and prowess of the Frankish and European princes of the First Crusade in recovering for him the Eastern Roman Empire, including Antioch and its See.
The crusaders reinstated at first the Greek patriarch, then John IV as long as the Orthodox patriarch remained there they tried to make him a Catholic instead of appointing a rival. However, when at last he fled to Constantinople they considered the see vacant. Thereupon the Latin Christians elected (1100) a patriarch of their own, an ecclesiastic by the name of Bernard who had come to the Orient with the crusaders. From that time Antioch had its Latin patriarchs until the last incumbent Christian was put to death by the Sultan Baibars during the conquest of the city in 1268. The Greeks also continued to choose their patriarchs of Antioch, but these lived generally in Constantinople.
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.
Both Latin and Greek Patriarchs continued to be appointed by the Pope and the Byzantine Emperor respectively during the following centuries. However, the Latin Patriarch was a titular office, with its seat at the Basilica di Santa Maria Maggiore in Rome. It continued to play a role in helping to protect various isolated Christian communities in the Near East and eventually secured their unity with Rome. The last holder of this office was Roberto Vicentini, who held it until his death 1953. It remained vacant until the title was suppressed in January 1964, along with the titles of Latin Patriarchs of Alexandria and Constantinople.