Jones's best-known work, The Later Roman Empire, 284–602 (1964), is considered the definitive narrative history of late Rome and early Byzantium, beginning with the reign of the Roman tetrarch Diocletian and ending with that of the Byzantine emperor Maurice.
Tetrarchy | Tetrarchy (Judea) | tetrarchy | Civil wars of the Tetrarchy |
Alternatively, a more idiomatic style may develop into an equally prestigious tradition of titles, because of the shining example of the original – thus various styles of Emperors trace back to the Roman Imperator (strictly speaking a republican military honorific), the family surname Caesar (turned into an imperial title since Diocletian's Tetrarchy).
Prefecture most commonly refers to a self-governing body or area since the tetrarchy when Emperor Diocletian divided the Roman Empire into four districts (each divided into dioceses, grouped under a Vicarius (a number of Roman provinces, listed under that article), although he maintained two pretorian prefectures as an administrative level above the also surviving dioceses (a few of which were split).