The New International Encyclopædia/Alexis Comnenus

ALEXIS, or ALEXIUS, COMNENUS (c.1180–1222). A grandson of Andronicus I. When Constantinople was captured by the Crusaders in 1204, Alexis, taking advantage of the situation, captured Trebizond and some other cities on the Black Sea. He took the title of Emperor of Trebizond, and was obliged to carry on a continuous war against the Turks.