Feudal barony of Dunster Fownes (c. 1722 – 1780), who under his father-in-law's will inherited the Luttrell estates including Dunster Castle, with the proviso that he should adopt the surname and arms of Luttrell. Henry Fownes (c. 1722 – 1780), who married the heiress Margaret Luttrell (1726–1766) and under his father-in-law's will inherited the Luttrell estates including Dunster Castle, with the proviso that he should adopt the surname and arms of Luttrell. He was High Sheriff of Somerset from 1754 to 1755, and a Member of Parliament for Minehead from 1768 to 1774. The couple modernised the Castle, in the Georgian style, which included
Dunster Castle and Colonel Robert Blake led a Parliamentary force against Dunster in October. In November Blake began his siege of the castle, setting up his artillery in Dunster village and starting to dig tunnels to plant mines beneath the walls. The castle was briefly relieved by reinforcements in February 1646, but the siege was resumed and by April the Royalists situation was untenable – an honourable surrender was negotiated and a Parliamentary garrison installed. After the end of the Second English Civil War in 1649, however, Parliament decided to deliberately destroy, or slight, the defences of castles in key Royalist areas,