1824 when the farm had become a gentleman's residence that Arthur Henry Carleton, 2nd Lord Dorchester, finally moved in. The Greenwood map, 1826, indicates that a formal garden has been started and it is clear that a gentleman's residence would have had pleasure grounds as well. The Tithe map of 1842 shows a mansion, approach drive, stable block, grounds and a surrounding park. The 1st edition OS maps show a partly walled kitchen garden as well as lawns and features such as a fountain and a pond. An old chalk pit to the east of the approach drive has become The Dell. Footpaths lead through the park and there has been much planting of trees in the parkland. An article in the Gardeners' Chronicle, 1907, indicates that the period 1870s – 1890s there was a great deal of planting both of plants and trees. A Dutch garden is described in what was originally the chalk pit (shown on early, old maps). The title of Lord Dorchester became extinct in 1897, but Henrietta Anne Carleton (by then Mrs Leir-Carleton), daughter of the last Lord Dorchester, applied for reinstatement of the title, which was granted by Queen Victoria in 1899. Henrietta then became the 1st Baroness Dorchester. In its turn, this title became extinct in 1963 when Henrietta's son from her first marriage to Francis Paynton Pigott, died. However, their daughter had already married William James Harris, 6th Earl of Malmesbury. In 2000, William James Harris died and James Carleton Harris became 7th Earl of Malmesbury thus a direct heir of Guy Carleton, 1st Baron Dorchester. He is the current owner of Greywell Hill House. St Mary's Church Greywell's church, dedicated to St Mary the Virgin, is an ancient structure of flint with stone quoins and dressings in the Norman and early English styles. It consists of a chancel, nave, porch and tower surmounted by wooden belfry containing four bells. At the time of the Domesday Survey in 1086 it is thought that the Chapel of St.Mary, beside the Whitewater, was one of the two churches within the Manor of Odiham mentioned in the survey. The church is of Norman origin and was built in the 12th century. Restored in 1870, it still boasts many old features, the most important of which is the early 16th century rood-screen, made of carved oak which before the restoration was used as a men's gallery