Dunster Castle motte, or Upper Ward, and an area below shaped to form the bailey, or Lower Ward. Somerset became more stable in the aftermath of the post-invasion period and the unsuccessful 1068 rebellion against Norman rule. It was common in the period for the Normans to build religious houses to accompany major castles, and accordingly William de Mohun endowed a Benedictine priory at Dunster in 1090, along with its parent abbey at Bath. The River Avill was important for trade; the region around Dunster was rich with fisheries and vineyards, and Dunster Castle prospered. Stone fortifications were built on the site
Dunster listed building and scheduled monument. Dunster Priory was established as a Benedictine monastery around 1100. The first church in Dunster was built by William de Mohun who gave the church and the tithes of several manors and two fisheries, to the Benedictine Abbey at Bath. The priory, which was situated just north of the church, became a cell of the abbey. The church was shared for worship by the monks and the parishioners, however this led to several conflicts between them. One outcome was the carved rood screen which divided the church in two with the parish using the west