Before the Conquest Alric, a man and thegn of King Edward, held and could sell a manor in Beachampton which was in the possession of Walter Giffard in 1086. It thus formed a parcel of the honour of Giffard and the overlordship descended with that of Lillingstone Dayrell. As in the case of this latter parish, the Domesday tenant Hugh was succeeded by the Earls of Oxford, to whom a mesne lordship of both manors belonged, there rights in Beachampton being mentioned as late as 1634.
Osmer de Beachampton was the first recorded under-tenant, being mentioned in 1175-6. In 1202 the names of Richard de Beachampton and his wife Avis are mentioned. This Richard is probably the same Richard who was the son of Roger de Beachampton that was granted land in Beachampton by his father, which included a virgate originally held by Osmer. By 1218 a Sir William de Beachampton kt. son of Richard was lord of this part of Beachampton.
A manor house was in existence in 1333, and it is mentioned again in 1592 when it was apportioned to Valentine Pigott's widow after the death of Valenine's father Thomas, the former lord of the manor.
A water mill stood on this manor in 1086 and was valued at 10 shillings, by 1285 there were two in Beachampton, which were conveyed the same year to Ellis de Tingewick and his heirs. This conveyance was made by the lord of the second manor in Beachampton and eventually they were among the appurtenances of the united manor in 1593, and the watermill called the Upper Milne was conveyed to Sir Thomas Bennett with the manor 1609.
The second manor was known afterwards as Whityngham's Manor, and was held by Lewin of Nuneham (Courtenay), both at the time of King Edward and in 1086. It was circa 1500 when the two manors were united.
Hall Farm, a little distance to the north of the church, on the south bank of the Ouse, is all that remains of Beachampton Hall, which was long the residence of the lords of the manor, it dates in its present state mainly from the early 17th century. Hall Farm was traditionally the home of Catherine Parr, the sixth wife of King Henry VIII. In the field adjacent to the farm Queen Anne allegedly reviewed some of her troops.
Some of the 17th century field names are as follows: Poor Man's Plot, Bridge Meade, Shrives Close, and Queen's Close, the last named recalling the fact that the Queens of England once held lands here as part of their dower. Browne Willis states that the parish was inclosed in 1579-80. There is no Inclosure Act.
see also 'Descriptions and Travel'
