Alexios I of Trebizond

Alexios I Megas Komnenos or Alexius I Megas Comnenus (; c. 1182 – February 1, 1222) was, with his brother David, the founder of the Empire of Trebizond, which he ruled from 1204 until his death in 1222. The two brothers were the only male descendants of the Byzantine Emperor Andronikos I, who had been dethroned and killed in 1185, and thus claimed to represent the legitimate government of the Empire following the conquest of Constantinople by the Fourth Crusade in 1204. Although his rivals governing the Nicaean Empire succeeded in becoming the de facto successors, and rendered his dynastic claims to the imperial throne moot, Alexios' descendants continued to emphasize both their heritage and connection to the Komnenian dynasty by referring to themselves as Megas Komnenos or Grand Komnenos.