Its name properly refers the EasternemperorValens but some also hold it to have honoured Valentinian.[6] Some researchers such as S. H. Rosenbaum,[citation needed] who place Valentia in far northern Britain also believe the name included wordplay with the Latinvallum ("wall"), cf. the island Munitia (wordplay on munitio) of Aethicus Ister's Cosmography.
"...turned his attention to make many necessary amendments, feeling wholly free from any danger in such attempts, since it was plain that all his enterprises were attended by a propitious fortune. So he restored cities and fortresses, as we have already mentioned, and established stations and outposts on our frontiers; and he so completely recovered the province which had yielded subjection to the enemy, that through his agency it was again brought under the authority of its legitimate ruler, and from that time forth was called Valentia, by desire of the emperor, as a memorial of his success."[7]
This occurred in AD 369. It represented the Roman recovery from the Great Conspiracy, which overran northern and western Britain in 367, alongside Germanic attacks on the Roman shores.
Ammianus speaks of the establishment of Valentia as the renaming of a recovered province (or possibly all of the territory in Britain), but the List of Offices names Valentia's governor separately alongside all four of the British provinces known from earlier sources. It is possible a new province was conquered or formed at some time after the composition of the Verona List. The List of Offices also lists two sets of troops under the Duke of the Britains (Dux Britanniarum). One covered the island's eastern shore while the second guarded the northwest coast and formed garrisons listed east to west along Hadrian's Wall. Scholars who place Valentia in Cumbria point to emendations of the surviving text's references to the western units as evidence that the area had been thoroughly overrun during the Great Conspiracy and so formed a prime candidate for Theodosius's reconquest and new command.
Ammianus also noted that the province was named "as if celebrating a minor triumph" (velut ovans). This was a lesser celebration held for unspectacular victories, as over slave revolts, and unusual for the destruction of a barbarian horde. One explanation is that the mutinous soldiers or even rebellious governors may have been involved, as full triumphs were never celebrated in victories over Roman citizens. Theodosius's lenient treatment of the conspirators involved with the rebel Valentine suggests discontent was already uncomfortably widespread.
As found in the Notitia Dignitatum. Provincial administration reformed and dioceses established by Diocletian, c. 293. Permanent praetorian prefectures established after the death of Constantine I. Empire permanently partitioned after 395. Exarchates of Ravenna and Africa established after 584. After massive territorial losses in the 7th century, the remaining provinces were superseded by the theme system in c. 640–660, although in Asia Minor and parts of Greece they survived under the themes until the early 9th century.