In 1097, he expelled the Slavonic monks of the monastery in Sazava, founded in 1033 by Procopius.
According to Procopius, the Heruli, after having raided the European continent for several generations, returned to Scandinavia in 512 AD as a result of military defeats.
The book is based on the theory that Erilaz refers to the Heruli, a Germanic tribe which Procopius reported had returned to Scandinavia.
In the 6th century it was besieged twice in the course of the Gothic War, by Belisarius and Totila; the Byzantine historian Procopius said it was the leading town of Picenum.
For example: Trofimko Czar (Torpes the Czar), Fedka Knyazets, Karp Guba, Prokopiy Gorbun (Procopius the Humpback), Amvrosiy Kovyazin, Sidorko Litvin.
By the time of Procopius's histories and Maurikios's Strategikon, the main effective field arm of Roman armies was cavalry, many of them armed with bows.
Opsites, an uncle of Gubazes, is mentioned by the 6th-century Byzantine historian Procopius as "king of the Lazi" on one occasion and as prince of east Abasgia on the other.
The charge of treason levelled by Procopius against Harith seems to be further undermined by the fact that, unlike Belisarius, he was retained in command and was active in operations around Martyropolis later in the year.
The relevant narrative of Procopius has been compared to the typical plots of the Ancient Greek comedy (New Comedy in particular) and/or Plautus.
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Florin Curta argues that Procopius' tale should not be taken at face value.
Another two of his paintings, of Saints Odile and Thecla, are located on the side altars in the Church of St. Procopius in Letinech.
Crone argues that if Mecca had been a well-known center of trade, it would have been mentioned by later authors such as Procopius, Nonnosus, or the Syrian church chroniclers writing in Syriac.
An article by art historian Noah Charney about the Vatican Library and its famous manuscript, Historia Arcana by Procopius.
In Western Europe, Procopius was first added into the calendar of saints by Bede, whose Martyrology lists the saint under July 8.