Cambria said to be the same as Wales
Cambria is a name for Wales, being the Latinised form of the Welsh name for the country, Cymru. The term was not in use during the Roman (when Wales had not come into existence as a distinct entity) or the early medieval period. After the Anglo-Saxon settlement of much of Britain, a territorial distinction developed between the new Anglo-Saxon kingdoms (which would become England and Southern Scotland) and the remaining Celtic British kingdoms (which would become Wales and, before their absorption into England, Cornwall to the south and Strathclyde or Hen Ogledd to the north). Latin being the primary language of scholarship in Western Christendom, medieval writers commonly used either the older term Britannia, as the territory still inhabited by Britons, or Wallia, a term derived from Old English, to refer to Wales. The term Cambria is first attested in Geoffrey of Monmouth in the 12th century as an alternative to both of these, since Britannia was now ambiguous and Wallia a foreign import, but remained rare until late in the Middle Ages.Cambria in legend
According to Geoffrey of Monmouth in the first part of his pseudohistory Historia Regum Britanniae ('History of the Kings of Britain'), the Trojan Brutus had three sons with his wife Innogen, among whom he divided his lands after landing in Britain and subduing Gogmagog. His eldest son, Locrinus, received the land between the rivers Humber and Severn, which he called Loegria (a Latinisation of the medieval Welsh name Lloegyr (modern Welsh: Lloegr), later to be most of England). His youngest son, Albanactus, got the lands beyond the Humber, which took from him the name of Albany (Latin Albania, not to be confused with other places of this name; Yr Alban in Welsh; later Scotland). The second son, Camber, was bequeathed everything beyond the Severn, which was called after him Cambria (later Wales and then-Brittonic areas immediately to the north and south of it). His general Corineus retained Cornwall, which was named after him.
This legend was widely accepted as fact throughout the 12th–16th centuries, though it bears no resemblance to actual political, demographic, or linguistic history.
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