So far we have considered the province of Britain as it was while it still remained in real fact a province. Let us now turn to the sequel and ask how it fits in with its antecedents. The Romanization, we find, held its own for a while. The sense of belonging to the Empire had not quite died out even in sixth-century Britain. Roman names continued to be used, not exclusively but freely enough, by Britons. Roman 'culture words' seem to occur in the later British language, and some at least of these may be traceable to the Roman occupation of the island. Roman military terms appear, if scantily. Roman inscriptions are occasionally set up. The Romanization of Britain was plainly no mere interlude, which passed without leaving a mark behind.[1] But it was crossed by two hostile forges, a Celtic revival and an English invasion. [Footnote 1: Much of the ornamentation used by post-Roman Celtic art comes from Roman sources, in particular the interlaced or plaitwork, which has been well studied by Mr. Romilly Allen. But how far it was borrowed from Romano-British originals and how far from similar Roman-provincial work on the Continent, is not very clear. (See p. 36.)] The Celtic revival was due to many influences. We may find one cause for it in the Celtic environment of the province. After 407 the Romanized area was cut off from Rome. Its nearest neighbours were now the less-Romanized Britons of districts like Cornwall and the foreign Celts of Ireland and the north. These were weighty influences in favour of a Celtic revival. And they were all the more potent because, in or even before the period under discussion, the opening of the fifth century, a Celtic migration seems to have set in from the Irish coasts. The details of this migration are unknown, and the few traces which survive of it are faint and not altogether intelligible. The principal movement was that of the Scotti from North Ireland into Caledonia, with the result that, once settled there, or perhaps rather in the course of settling there, they went on to pillage Roman Britain. There were also movements in the south, but apparently on a smaller scale and a more peaceful plan.[1] At a date given commonly as A.D. 265-70--though there does not seem to be any very good reason for it--the Dessi or Déisi were expelled from Meath and a part of them settled in the south-west of Wales, in the land then called Demetia. This was a region which was both thinly inhabited and imperfectly Romanized. In it fugitives from Ireland might easily find room. The settlement may have been formed, as Professor Bury suggests, with the consent of the Imperial Government and under conditions of service. But we are entirely ignorant whether these exiles from Ireland numbered tens or scores or hundreds, and this uncertainty renders speculation dangerous. If the newcomers were few and their new homes were in the remote west beyond Carmarthen (Maridunum), formal consent would hardly have been required.