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
Dunster mentioned in the Domesday Book of 1086. From that time it was the "caput" of the Feudal barony of Dunster. The Castle was remodelled on several occasions by the Luttrell family who were lords of the manor from the 14th to 20th centuries. The benedictine Dunster Priory was established in about 1100. The Priory Church of St George, dovecote and tithe barn are all relics from the Priory. The village became a centre for wool and cloth production and trade, of which the Yarn Market, built by George Luttrell (d.1629), is a relic. There existed formerly a harbour, known as