Warkworth is a village and civil parish in West Northamptonshire, about 2 miles (3 km) east of Banbury in Oxfordshire and 1 mile (1.6 km) southeast of junction 11 of the M40 motorway. The land on which the village lies was granted to the Lyons family by William the Conqueror, shortly after the Norman Conquest, and belonged to the familyuntil the 15th century. Their seat was Warkworth Castle. The 2001 Census recorded the parish's population as 31.