Cornish people

The Cornish people are a Celtic ethnic group and nation native to, or associated with Cornwall and a recognised national minority in the United Kingdom, which can trace its roots to the ancient Britons who inhabited southern and central Great Britain before the Roman conquest. Many in Cornwall today continue to assert a distinct identity separate from or in addition to English or British identities. Cornish identity has been adopted by migrants into Cornwall, as well as by emigrant and descendant communities from Cornwall, the latter sometimes referred to as the Cornish diaspora. Although not included as an explicit option in the UK census, the numbers of those claiming Cornish ethnic and national identity are officially recognised and recorded.
Throughout classical antiquity, the ancient Britons formed a series of tribes, cultures and identities in Great Britain; the Dumnonii and Cornovii were the Celtic tribes who inhabited what was to become Cornwall during the Iron Age, Roman and post-Roman periods. The name Cornwall and its demonym Cornish are derived from the Celtic Cornovii tribe. The Anglo-Saxon invasion and settlement of Britain in the 5th to 6th centuries restricted the Romano-British culture and language gradually into the north and west of Great Britain whilst the inhabitants of southern and eastern Britain became English. The Cornish people, who shared the Brythonic language with the Welsh and Bretons across the sea, were referred to in the Old English language as the "Westwalas" meaning West Welsh. The Battle of Deorham between the Britons and Anglo-Saxons is thought to have resulted in a loss of landlinks with the people of Wales.
The Cornish people and their Brythonic Cornish language experienced a process of anglicisation and attrition during the Medieval and early Modern Period. By the 18th century, and following the creation of the Kingdom of Great Britain, the Cornish language and identity had faded, largely replaced by the English language (albeit Cornish-influenced West Country dialects and Anglo-Cornish) and/or British identity. A Celtic revival during the early-20th century enabled a cultural self-consciousness in Cornwall that revitalised the Cornish language and roused the Cornish to express a distinctly Celtic heritage. The Cornish language was granted official recognition under the European Charter for Regional or Minority Languages in 2002, and in 2014 the Cornish people were recognised and afforded protection by the UK Government under the Framework Convention for the Protection of National Minorities.
In the 2011 census, the population of Cornwall, including the Isles of Scilly, was estimated to be 532,300. The Cornish self-government movement has called for greater recognition of Cornish culture, politics and language, and urged that Cornish people be accorded greater status, exemplified by the call for them to be one of the listed ethnic groups in the United Kingdom Census 2011 form.