Isaac Komnenos, Duke of Antioch

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Isaac Komnenos or Comnenus was the nephew of the Byzantine Emperor Isaac I Komnenos (1057-1059) and the duke of Antioch, thus leader of the eastern army.

He had in his service Hervé and a host of Norman mercenaries under his command based at Edessa. His was a border theme and he had to fight against the invading Seljuk Turks. Most of his territory was conquered eventually by the Turks only to be reconstituted as the Principality of Antioch and the County of Edessa by the barons of the First Crusade.