Newbury was founded late in the 11th century following the Norman conquest as a new borough, hence its name. Although there are references to the borough that predate the Domesday Survey it is not mentioned by name in the survey. However, its existence within the manor of Ulvritone is evident from the massive rise in value of that manor at a time when most manors were worth less than in Saxon times. In 1086 the Domesday Book assesses the borough as having land for 12 ploughs, 2 mills, woodland for 25 pigs, 11 villeins (resident farmhands, unfree peasant who owed his lord labour services), 11 bordars (unfree peasants with less land than villans/villeins), and 51 enclosures (private parks) rendering 70s 7d.