Cornwall is a ceremonial county and unitary authority in England in the United Kingdom, forming the tip of the south-western peninsula of Great Britain. It is bordered to the north and west by the Atlantic Ocean, to the south by the English Channel, and to the east by the county of Devon, over the River Tamar. Taken with the Isles of Scilly Cornwall has a population of 534,300, and covers an area of 3,563 km2 (1,376 sq mi). The administrative centre and only city is Truro.
The area now known as Cornwall was first inhabited in the Palaeolithic and Mesolithic periods. It continued to be occupied by Neolithic and then Bronze Age peoples, and later (in the Iron Age) by Celts. There is little evidence that Roman rule was effective west of Exeter and few Roman remains have been found. Cornwall was afterwards part of the Brythonic (Celtic) area of Dumnonia, separated from Wales after the Battle of Deorham, often coming into conflict with the expanding English kingdom of Wessex before King Athelstan in 936 AD set the boundary between English and Cornish people at the Tamar. Today, Cornwall's economy struggles after the decline of the mining and fishing industries, and has become more dependent on tourism: however some decline in this has also occurred. The area is noted for its wild moorland landscapes, its extensive and varied coastline and its mild climate.
- Stenton, F. M. (1947) Anglo-Saxon England. Oxford: Clarendon Press; p. 337