Feudal barony of Dunster of Dunster, was as follows: William de Moyon (died post 1090) ("alias" de Moion, later de Mohun), Domesday Book holder of Dunster Castle, 1st feudal baron of Dunster, was Seigneur of Moyon near Saint-Lô in Normandy and was Sheriff of Somerset in 1086. He was the founder of the English "de Mohun" family, prominent in the Westcountry, extinct in the male line seated at Dunster in 1375 and extinct in the junior male line seated at Mohuns Ottery in Devon at about the same time. He is recorded in the Domesday Book of 1086 as holding the manor of "Torre"
Feudal barony of Dunster (1303–1377) and widow of Sir John de Vere, son of the Earl of Oxford. In the following year 1375 Lady Mohun's husband died, being the last in the male line of Mohun. In the following year 1376, Lady Mohun completed the transaction, namely that her trustees settled the castle of Dunster, the manors of Kilton, Minehead and Carhampton, and the hundred of Carhampton on Lady Mohun for her life, with remainder to Elizabeth Luttrell and her heirs. Lady Elizabeth Luttrell never lived at Dunster, as she died in 1395 before Lady Mohun's life interest had expired. But Dunster Castle remained