He retained his dukedom until the Turks began to press heavily upon him. In December 1084, he lost Antioch to Suleiman I, Sultan of Rum.[citation needed] In 1087, Edessa fell to Malik Shah and Philaretos escaped back to the fortress of Germanikeia; however, some sources indicate that he died in 1086. He was the last well-known Domestic of the Schools of the East.