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
Gallox Bridge, Dunster Avill, is now located approximately from the village, and used to have a significant harbour, known as Dunster Haven, which was used for the export of wool from Saxon times; however, it was last used in the 17th century and has now disappeared among the dykes, meadows and marshes near the shore. Dunster had become a centre for woollen and clothing production by the 13th century, with the market dating back to at least 1222, and a particular kind of kersey or broadcloth became known as 'Dunsters'. The prosperity of Dunster was based on the wool trade, with profits helping