Procopius 
Of the Buildings of Justinian – Illustrated Edition 1888 [EPUB ebook] 

Procopius was born at Cæsarea in Palestine, early in the sixth or at the end of the fifth century. He made his way, an adventurer, to Constantinople, where he began as an advocate and Professor of Rhetoric. He had the good fortune to be recommended to Belisarius, who appointed him one of his secretaries. In that capacity Procopius accompanied the general in his expedition to the East, A.D. 528, and in that against the Vandals, A.D. 533. The successful prosecution of the war enriched Belisarius to such an extent that he was enabled to maintain a retinue of 7000 men, of whom Procopius seems to have been one of the most trusted, since we find him appointed Commissary General in the Italian war. On his return to Constantinople, he was decorated with one of the innumerable titles of the Byzantine Court, and entered into the Senate. In the year 562 he was made Prefect of Constantinople, and is supposed to have died in 565—the same year as his former patron Belisarius.