John Komnenos
John Komnenos Vatatzes, (, "Iōannēs Komnēnos Vatatzēs"), or simply John Komnenos or John Vatatzes (the transliteration 'Batatzes' is also employed) in the sources, was a major military and political figure in the Byzantine (Eastern Roman) Empire during the reigns of Manuel I Komnenos and Alexios II Komnenos. He was born c. 1132, and died of natural causes during a rebellion he raised against Andronikos I Komnenos in 1182.