David Megas Komnenos was the last Emperor of Trebizond from 1460 to 1461. He was the third son of Emperor Alexios IV of Trebizond and Theodora Kantakouzene. Following the fall of Trebizond to the Ottoman Empire, he was taken captive with his family to the Ottoman capital, Constantinople, where he and his sons and nephew were executed in 1463.
David Megas Komnenos, as depicted in a modern religious icon
The Empire of Trebizond, or Trapezuntine Empire, was a successor state of the Byzantine Empire that existed during the 13th through to the 15th century. The empire consisted of the Pontus, or far northeastern corner of Anatolia, and portions of southern Crimea.
The Hagia Sophia church of Trebizond, which was converted from a museum to mosque in 2013.
Copy of a destroyed fresco depicting Alexios III, his mother Eirene and his wife Theodora, Panagia Theoskepastos Monastery
Alexios III, from the chrysobull he granted to the Dionysiou monastery on Mount Athos.