William de Mohun of Dunster, 1st Earl of Somerset William de Mohun of Dunster, 1st Earl of Somerset William de Mohun of Dunster, Earl of Somerset (c. 1090 – c. 1155), 2nd feudal baron of Dunster, was a favourite of Empress Matilda and a loyal supporter of her in the war against King Stephen, during which he earned the epithet of the "Scourge of the West". William was the son of William de Moion, who was seigneur of Moyon which is close to Saint-Lô. The elder William was High Sheriff of Somerset in 1084. During the war between Matilda and Stephen, Stephen marched against Mohun's castle at Dunster, but
Dunster Castle sold the castle back to Geoffrey in 1954. His son Colonel Walter Luttrell lived away from Dunster, and following the death of his mother – the last Luttrell to live in the property – gave the castle and most of its contents to the National Trust in 1976. Dunster Castle is operated by the National Trust as a tourist attraction. Little remains of the medieval castle except for the Great Gatehouse and the remains of several towers in the Lower Ward; the heart of the modern castle today is the much altered 17th-century manor house. The key features of the