Horley is a village and civil parish in the north of Oxfordshire, England about 3 miles (5 km) northwest of Banbury. It lies in the extreme north-west of the county on the Warwickshire border, and is largely bounded by streams which eventually flow into the Sor Brook, a tributary of the Cherwell. The parish had a population of 319 according the the UK census of 2001.
The Church of England parish church of Saint Etheldreda, along with the church of St. John the Baptist, Hornton were dependent chapelries of King's Sutton in Northamptonshire until the middle of the 15th century.
Victoria County History of Oxfordshire, volume 9, chapter on Horley and Hornton. (a very detailed account)