King Arthur's exploits in various places throughout Britain
Even the sceptical Elton15 concedes anent King Arthur that his existence is admitted. The scene of his exploits is variously laid at Caerleon, and in the Cambrian or Cumbrian Hills. It also seems to be true that he engaged in a war with the Angles in Northumbria.
Professor Dr. F.F. Bruce explains16 that about A.D. 460, Ambrosius Aurelius alias Embres Erryll had rallied the Britons in a revival which checked the westward flow of the barbarians from the Continent. In the following generation, his work was apparently carried on by another Briton named Artor(ius). His name has been preserved in the Arthurian legend.