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 cross has an octagonal base and polygonal shaft, however the head of the cross has been lost. It stands on a small area of raised ground on a plinth. The socket stone is wide and high. The surviving shaft is high and changes from square to octagonal as it rises. There is an inscription on the northern face which says "WC, 1871, WS" recording a restoration. It is in the care of English Heritage for the state and managed by the National Trust. Other notable buildings include the Nunnery, Dunster Watermill, Dovecote and the Priory barn, which belonged to Dunster