Horsley is a village and civil parish near the small Cotswold town of Nailsworth. The population at the 2011 census was 820. It is in Gloucestershire in the South West of England. The origins of the name Horsley are much debated, though it is thought that it originates from "Horse in a field" after the large number of horses kept in fields on its rolling hillside. Horsley Court on Narrowcut Lane dates back to c1690. The house was altered and enlarged c1820, with a central tower added in c1850. It was built for the Webb family of clothiers.