CLAYTHORPE, a hamlet, in the township and parish of Burton-in-Kendal, Lonsdale ward, county of Westmorland, 1 mile (N.E. by N.) from Burton-in-Kendal. About a mile from the village is Farlton Knot, a huge limestone mountain, resembling in form the Rock of Gibraltar. On the edge of another mountain is a natural curiosity called Claythorpe Clints, consisting of a limestone rock, forming an inclined plane to the horizon, and deeply rent in many places by the supposed ebbing of a great body of water, or the retiring of the ocean, by which it is conjectured that this, with some other plains in the neighbourhood, was once covered.
Extract from: A Topographical Dictionary of England comprising the several counties, cities, boroughs, corporate and market towns, parishes, and townships..... 7th Edition, by Samuel Lewis, London, 1848.