And the island of Britannia revolted from the Romans, and the soldiers there chose as their emperor Constantinus, a man of no mean station. And he straightway gathered a fleet of ships and a formidable army and invaded both Spain and Gaul with a great force, thinking to enslave these countries. . .the Romans never succeeded in recovering Britannia, but it remained from that time on under tyrants.
Source: Procopius, History of the Wars, 7 vols., trans. H. B. Dewing (Cambridge, Mass., and London: Harvard University Press & Wm. Heinemann, 1914; reprint ed., 1953-54), II.11-23.
Following are two different accounts of Clovis’s (called Chlodovocar in these documents–Clovis was his Latin name, used more by the historians who wrote about him than by Clovis himself).
After the decline of Rome in the West, various “barbarian” kingdoms emerged. One of these, the kingdom of the Franks, became dominant in what is now France and Germany. Its first dynasty, that of the Merovingian and, later, the stronger Carolingian Dynasty.
In 410 CE, the Visigoth Alaric besieged Rome and sacked the city, the first in a series of humiliations of the once great imperial city. The historian Procopius recounted this event.