 The core of the two towns Hounslow and Isleworth became urban before the 19th century along with the intended senior Army officer's retirement estate of Spring Grove which adjoins Isleworth and the village centre of Heston in the north-west.Two major green tracts, part-farmland and part-ornamental skirted the seat, Osterley Park (its House being the former home of the Earl of Jersey) and Syon Park (its House being the metropolitan home of the Duke of Northumberland).They were adjoined by small rows of grand urban homes and high-attainment schools.