Disappointed with the inability of the Byzantines to protect him against the advance of the Seljuk Turks, Oshin fled west from his fortress near Ganja to Cilicia in 1072. The 12th century chronicler Samuel of Ani wrote about Oshin's departure from his ancestral lands: ...with his brother Halgam, with his wife and other nobles. Carrying his wealth and the finger of the holy apostle Peter, he entered Cilicia and captured from the Muslims the fortress of Lampron, at the foot of the Taurus Mountains toward Tarsus. His kinsman, Abu'lgharib Artsuni, governed Taurus and Mopsuestia in the name of the Emperor Alexius I Comnenus. He ceded to Oshin two forts in western Cilicia, Lampron and Barbaron at Tarsus near the Cilician Gates. While Samuel of Ani implies that Oshin seized Lampron from Muslims, other Armenian writers closer to the Hethumids suggest that Oshin was merely a faithful chieftain of Abulgharib who later ceded the castle of Lampron to him. Matthew of Edessa and Sempad the Constable mention Oshin only in passing. The Emperor had no objection to seeing the Armenians becoming a buffer between him and the invading Seljuks; and confirmed Oshin, together with two other Armenian leaders who had established themselves in the Taurus, Ruben and Gogh Vasil, in their positions by bestowing on them the imperial title of sebastos.