Procopius. Procopius was born in the heyday of the Byzantine Empire. In Byzantium at that time, under the leadership of Emperor Justinian I, the country was strong and had a vast territory. Procopius is famous for his outstanding historical works "History of Rome" and "History of Byzantium", which has had a far-reaching influence on the historical records and compilation of Byzantine Empire and provided valuable information for later historians. Therefore, Procopius is considered as one of the greatest historians of the early Byzantine Empire.