troops and revolted against the Byzantine Empire. He was joined by many other Armenian lords and nobles. Thus, in 1080, the foundations of the independent Armenian princedom of Cilicia, and the future kingdom, were laid under Ruben's leadership. His descendants were called Rubenids (or Rubenians). After Ruben's death in 1095, the Rubenid principality, centered around their fortresses, was led by Ruben's son, Constantine I of Armenia; however, there were several other Armenian principalities both inside and beyond Cilicia, such as that of the Het'umids. This important Armenian dynasty was founded by the former Byzantine general Oshin, and was centered southwest of the Cilician Gates. The Het'umids have always contended with the Rubenids for power and influence over Cilicia. Various Armenian lords and former generals of Philaretos were also present in Marash, Malatia (Melitene), and Edessa, the latter two being located outside Cilicia. First Crusade During the reign of Constantine I, the First Crusade took place. An army of Western European Christians marched through Anatolia and Cilicia on their way to Jerusalem. The Armenians in Cilicia gained powerful allies among the Frankish Crusaders, whose leader, Godfrey de Bouillon, was considered a savior for the Armenians. Constantine saw the Crusaders' arrival as a one-time opportunity to consolidate his rule of Cilicia by eliminating the remaining Byzantine strongholds in the region. With the Crusaders' help, they secured Cilicia from the Byzantines and Turks, both by direct military actions in Cilicia and by establishing Crusader states in Antioch, Edessa, and Tripoli. The Armenians also helped the Crusaders; as described by Pope Gregory XIII in his : To show their appreciation to their Armenian allies, the Crusaders honored Constantine with the titles of Comes and Baron. The friendly relationship between the Armenians and Crusaders was cemented by frequent intermarriages. For instance, Joscelin I, Count of Edessa married the daughter of Constantine, and Baldwin, brother of Godfrey, married Constantine's niece, daughter of his brother T'oros. The Armenians and Crusaders were part allies, part rivals for the two centuries to come. Often at the invitation of Armenian barons and kings the Crusaders maintained for varying periods castles in and along the borders of the Kingdom, including Bagras, Trapessac, T‛il Hamtun, Harunia, Selefkia, Amouda, and Sarvandikar. Armenian-Byzantine and Armenian-Seljuk contentions The son of Constantine was T'oros I, who succeeded him in around 1100. During his rule, he faced both Byzantines and Seljuks, and expanded the Rubenid domain. He