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An eminent Greek historian of the sixth century, the leading authority for Justinian's reign; born at Caesarea in Palestine. He was private secretary to Belisarius, then chief of his commissariat and his navy, and prefect of Constantinople under Justinian. Of his writings we have the "Histories", or as the author styles them, "Books about the Wars" of his time,-Persian, Vandal, and Gothic; a treatise "On Buildings"; "Anecdotes" (posthumous), a supplement to the "Histories", consisting of political and personal matter he dared not publish in his lifetime.