Procopius

Procopius of Caesarea (c..495 - after 562): Byzantine courtier and author.

Born in Caesarea in Palestine, probably at the end of the fifth century CE
527: Private secretary and legal adviser (consiliarius) of general Belisarius; joins him on his campaigns
533-534: War against the Vandal Kingdom
535- 554: War against the Ostrogothic Kingdom (interrupted by a war against the Sasanian Persians)
Some minor offices; starts making notes for a history of the reign of Justinian
542: Victim of the plague
550/551: Publishes the History of the Wars
554: Publishes the Buildings
562: Praefectus urbi
The Secret History was published postumously

History of the Wars: an overview of the wars of Belisarius (Books 1-2: Persian War of Justin and Justinian; Books 3-4 Belisarius' campaign against the Vandal Kingdom in Sicily and Africa; Books 5-7: Belisarius' campaign against the Ostrogothic Kingdom in Italy; Book 8: Later Wars until the year 554 (text)
Buildings: an overview of the monuments built and restored by the emperor Justinian (text)
Secret History: a hostile biography of the emperor Justinian, the empress Theodora, general Belisarius, and his wife Antonina (text)