Dunster Castle the north; a third force, under the command of William de Mohun, landed by sea along the Somerset coast. William had been granted 68 manors in the region and by 1086 had established a castle at Dunster; this would form both the "caput", or principal castle, for his new lands, and help guard the coast against the threat of any fresh sea-borne attack, as well as controlling the coastal road running from Somerset to Gloucestershire. This first castle was a motte and bailey design, built upon the former Anglo-Saxon "burgh"; the top of the Tor was scarped to form the
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