Manuel I Megas Komnenos

Manuel I Megas Komnenos (died March 1263), a son of Alexios I, succeeded his elder brother John I in 1238 and ruled Trebizond over a strip of the southern Black Sea coast. The chronicler Michael Panaretos praised him as his line's greatest and most fortunate general.

In 1254 he retook Sinope from the Sultanate of Rum, and between 1250 and 1260 rebuilt the Hagia Sophia monastery in Trebizond. After Michael VIII Palaiologos recovered Constantinople in 1261, Manuel refused to renounce the imperial title. He died in March 1263; four of his children later ruled Trebizond.