A holding in Newnham is mentioned in the Domesday Survey as held by William FitzBaderon in 1086, when it was assessed at 1 hide. Following VCH, however, the manor and borough of Newnham belonged to the crown in the 11thc, and in 1086 was included in the large royal estate of Westbury. Royal demesne in Newnham was mentioned in 1130, and it remained in the crown’s possession until 1327.
A church was mentioned at Newnham in 1016, and its dedication to St Peter is known in 1310. This church originally stood on a different site, and was rebuilt c.1380 on the present site, given by Humphrey de Bohun, Earl of Hereford (Woods (1912), 57-59, VCH.