The
Empire of Trebizond was a monarchy that flourished during the 13th through 15th centuries, comprising the far northeastern corner of
Anatolia and the southern
Crimea. Originally formed during a revolt against the usurpation of the imperial throne by the grandsons of Emperor
Andronikos I Komnenos, Trebizond became a
Byzantine Greek successor state established after the fall of the
Byzantine Empire in the
Fourth Crusade, along with the
Empire of Nicaea and the
Despotate of Epirus. The Emperors of Trebizond pressed their claim on the Imperial throne for decades after the Nicaean reconquest of Constantinople in 1261.