Kempton Park appears on the Middlesex Domesday Map as "Chenetone" a later variant of which was Chennestone, with a variation also seen of Kenyngton however many apparent references to Royal Jousts in the 14th and 15th centuries seem rather to relate to Kennington that was then in Surrey. Its overlord and tenant-in-chief was Robert, Count of Mortain, half-brother of William the Conqueror. In 1086 the Domesday assets of the manor were: 5  hides; 4 ploughs, meadow for 5 ploughs, cattle pasture, 8 arpents (approximately acres) of newly planted vineyard; its parish and church was at all times Sunbury.