Laithkirk is a hamlet in County Durham. Historically it was part of the North Riding of Yorkshire, and was transfered to County Durham in 1974 as part of local government reorganisation.
LAITH-KIRK, a district chapelry, in the township of Lune-Dale, parish of Romald-Kirk, union of Teesdale, wapentake of Gilling-West, N. riding of the county of York, 9 miles (N.W.) from Barnard-Castle. The hamlet is situated to the west of the Lune, and near the confluence of that river with the Tees, which passes on the north. The chapel is an ancient edifice: the living is in the gift of the Rector.
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.