Westwood is a large village in West Wiltshire, on the western outskirts of Bradford-on-Avon and 5 miles SE of Bath. The church is mostly Perpendicular though a reused stone that forms the head of the door in the S wall of the chancel could date from the 12thc. The church was restored in 1840.

Westwood was given by Aethelred II to his wife Emma in dower, and confirmed to her by her second husband, King Cnut and by their son Harthacnut. After Harthacnut's death in 1042 she gave the manor to Winchester Cathedral Priory in his memory. In 1086 Westwood was among the lands assigned by the Bishop of Winchester to the support of his monks. It had land for 5 ploughs, a mill, meadow and woodland. It was held by the Cathedral Priory until the dissolution when it reverted to the crown.

VCH notes the chancel doorway but makes no mention of the relief recorded here. The List Description mentions it without comment as part of the doorway. Pevsner (1975) suggests that the tympanum was 'perhaps originally Norman, and partly incised much later'. It is difficult to see what led him to this conclusion, and it is suggested here that the stone was decorated in its entirety in the late-12thc or early-13thc.