Following the Norman Conquest, part of the land was granted to the monks of Merton Priory by Gilbert the Norman. A chapel – now the church – was built, the first recorded incumbent being in 1179. The chapelry of Thames Ditton was subordinate to Kingston Rectory until the late 1700s. By Act of Parliament in 1769, Thames Ditton, which had from the early 1600s assumed the civilian vestry responsibilities of a parish, became a separate curacy and an ecclesiastical parish in its own right, subsuming Hinchley Wood, Claygate and Weston Green. (Long Ditton remained a separate parish, not within the Kingston Rectory, despite attempts during Cromwell's time to fuse the two).