History of Medieval Cumbria has no actual associations with Arthur but is said to have been a duelling ground for Lancelot. It, too, was near Clifford's castle at Brougham and was probably given the name by him. It was also believed that Arthur's last battle at Camlann, in which he was fatally wounded, was fought near the fort of Birdoswald, whose Roman name was thought to have been Camboglanna (although it is now thought that Birdoswald was really called Banna, with Castlesteads being Camboglanna). The Roman bath-house at Ravenglass, known locally as Walls Castle, was thought to be the Arthurian "Lyons Garde", or Taliesin's
Historicity of King Arthur date ascribed to the "Historia Brittonum" which is usually attributed to Nennius, a Welsh ecclesiastic. "Historia Brittonum" lists 12 battles fought by Arthur and gives him the title of "dux bellorum" (war commander or leader), saying that Arthur fought "alongside the kings of the Britons", rather than that Arthur was himself a king. The list is inserted between the death of Hengist and the reign of Ida of Bernicia. Other accounts associating Arthur with the Battle of Badon can be shown to be derived directly or indirectly from the "Historia Brittonum". The earliest version of the "Annales Cambriae" was composed