Location and coordinates are for the approximate centre of Horsley within this administrative area. Geographic features and populated places may cross administrative borders.
Gazetteer of the British Isles (Edinburgh: Bartholomew, 1887). John Bartholomew
Horsley, eccl. dist. and hamlet, Elsdon par., N. Northumberland - dist., pop. 237; hamlet, on river Rede, 3 miles NW. of Otterburn.