Year 1137 (MCXXXVII) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. Events By place Byzantine Empire Spring – Emperor John II (Komnenos) leads a Byzantine expeditionary force into Cilicia (the Byzantine fleet guards his flank). He defeats the Armenians under Prince Leo I ("Lord of the Mountains"), and captures the cities of Mersin, Tarsus, Adana and Mamistra. Leo retreats to the great fortifications of Anazarbus – where its garrison resists for 37 days. The Byzantine siege engines batter down its walls, and the city is forced to surrender. Leo escapes into the Taurus Mountains, while the Byzantine forces march southward into the plain of Antioch. August 29 – John II appears before the walls of Antioch, and encamps with the Byzantine army on the north bank of the Orontes River. For several days he besieges the city, Raymond of Poitiers (prince of Antioch) is forced to surrender. He recognizes John as his suzerain and becomes with Joscelin II (count of Edessa) a vassal of the Byzantine Empire. Levant March 25 – Bazwāj, a mamluk (slave) commander of Damascus, launches a military campaign against Tripoli, reaching Pilgrims' Mount. He defeats a Crusader army under Count Pons (protector of Tripoli). Pons is forced to flee into the mountains where native Christians capture him. Later, he is handed over and instantly put to death by Bazwāj. Summer – Battle of Ba'rin: A Crusader force led by King Fulk of Jerusalem is scattered and defeated by Imad al-Din Zengi, Seljuk governor (atabeg) of Mosul. Fulk with a small bodyguard escapes into Montferrand Castle, which is surrounded and besieged by Zengi. After negotiations, Fulk is granted his freedom in exchange for the castle. Europe April 9 – William X (the Saint), duke of Aquitaine, dies while on a pilgrimage to Santiago de Compostela (modern Spain). On his deathbed, he expresses his wish to see King Louis VI (the Fat) of France as protector of his 15-year-old daughter Eleanor, and to find her a suitable husband. July 25 – Louis VI sends his 16-year-old son Louis Capet with an escort of 500 knights to Bordeaux, along with Abbot Suger in charge of the wedding arrangements. Louis and Eleanor are married in the Cathedral of Saint-André. France unites Aquitaine and its territories to the Pyrenees. August 1 – Louis VI dies of dysentery at Paris after a 29-year