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
St Wynwallow's Church, Landewednack building. The last Cornish language sermon was preached here in 1674, though this claim has also been made for the churches of Towednack and Ludgvan. The settlements of Grade, Ruan Major and Ruan Minor were united into a single civil parish called Grade-Ruan in 1934. The former parish church of Ruan Major is now in ruins. St Wynwallow's Church is part of a group of parishes comprising: St Wynwallow's Church, Landewednack St Wynwallow's Church, Landewednack, is the parish church of Landewednack parish in Cornwall, England, United Kingdom. It is the most southerly church in mainland Britain and is situated approximately