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
Feudal barony of Dunster Milton Abbey, Dorset, and the couple made many extravagant alterations to the Castle, including the addition of the carved wooden staircase and a new dining-room with elaborate plasterwork ceilings. An inventory dated 1690 survives, which lists the sumptuous fittings and furnishings at that date. By his wife Mary Tregonwell he had two daughters, Mary and Frances, and a son and heir Tregonwell Luttrell (1683–1703), of Dunster Castle, who died without children. Tregonwell Luttrell (1683–1703), son, who died without children. Col. Alexander Luttrell (1663–1711), uncle, youngest son of Francis Luttrell (1628–1666) of Dunster Castle. He matriculated at Christ Church, Oxford in