Cornwall Cornwall Cornwall (; ) is a county in South West England in the United Kingdom. The county is bordered to the north and west by the Celtic Sea, to the south by the English Channel, and to the east by the county of Devon, over the River Tamar which forms most of the border between them. Cornwall forms the westernmost part of the South West Peninsula of the island of Great Britain. The furthest southwestern point of the island is Land's End; the southernmost point is Lizard Point. Cornwall has a population of and covers an area of . The
History of Cornwall resulted in the beginnings of Cornish nationalism in the late 20th century. Cornwall's Early Medieval history, in particular the early Welsh and Breton references to a Cornish King named Arthur, have featured in such legendary works as Geoffrey of Monmouth's "Historia Regum Britanniae", predating the Arthurian legends of the Matter of Britain (see the list of legendary rulers of Cornwall). The present human history of Cornwall begins with the reoccupation of Britain after the last Ice Age. The inhabitants may have been related to the Iberians who occupied Spain and Portugal. The upland areas of Cornwall were the parts first