Isaac Komnenos (son of John II)
Isaac Komnenos or Comnenus (Greek: Ἰσαάκιος Κομνηνός, Isaakios Komnēnos; c. 1113 – after 1154), was the third son of Byzantine Emperor John II Komnenos by Piroska of Hungary.
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Isaac Komnenos (son of John II) - Wikipedia