The church of St Mary on the northern edge of Cholsey was founded in AD 986, although the present building was built in the early half of the 12th century. Features of the church are the dog-toothed Norman doorway, a crenellated flint crossing tower and the sanctus bell which was cast in London between 1290 and 1310. The well-known novelist, Agatha Christie, is buried in the churchyard. I visited her grave. Source: Oxfordshire Villages.