Cornwall county has been administered since 2009 by the unitary authority, Cornwall Council. The ceremonial county of Cornwall also includes the Isles of Scilly, which are administered separately. The administrative centre of Cornwall, and its only city, is Truro. Cornwall is the homeland of the Cornish people and the cultural and ethnic origin of the Cornish diaspora. It retains a distinct cultural identity that reflects its unique history, and is recognised as one of the Celtic nations with a rich cultural heritage. It was formerly a Brythonic kingdom and subsequently a royal duchy. The Cornish nationalist movement contests the present constitutional
Duke of Cornwall does not use that title. The Duchy includes over 570 square kilometres of land, more than half of which lies in Devon. The Duke has some rights over the territory of Cornwall, the county, and for this and other reasons there is debate as to the constitutional status of Cornwall. The High Sheriff of Cornwall is appointed by the Duke, not the monarch, in contrast to the other counties of England and Wales. The Duke has the right to the estates of all those who die without named heirs ("bona vacantia") in the whole of Cornwall. In 2013, the Duchy