diplomat
Byzantine general
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Not who you're looking for? Others named John Doukas: son of Michael II of Epirus, hostage in Constantinople · Greek nobleman and general · Byzantine admiral · Byzantine usurper
John Doukas was a senior Byzantine military commander and diplomat under Manuel I Komnenos, serving in southern Italy, Hungary, Asia Minor, and the Holy Land. He rose to the rank of sebastos and the office of megas hetaireiarches. Several of his seals bearing these titles are extant.
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