Dunster Castle front and square towers, set within the older castle walls and overlooked by the keep above. The building was decorated in the latest styles, including ornamental plaster ceilings. The project ran almost three times over budget, costing Luttrell more than £1,200. In the 1640s the English Civil War broke out between the supporters of King Charles I and Parliament. Thomas Luttrell, George's eldest son, initially supported Parliament and after the outbreak of war William Russell, the Duke of Bedford and Parliamentary commander in Devon and Somerset, ordered him to increase the garrison at Dunster to resist a potential Royalist attack.
Dunster Castle ran up new debts, and the castle was handed over into the control of a receiver. Henry Fownes Luttrell, who married Margaret, Alexander's daughter, and took the Luttrell name, moved to Dunster in 1747. The couple redesigned and redecorated the castle in a Rococo style, including the extensive use of the recently invented and highly fashionable wallpaper. Henry Luttrell raised the ground height of the Lower Ward between 1764 and 1765 to extend the New Way all around to the front of his mansion, adding additional ornamental towers onto the inside of the Great Gatehouse in the process. A folly,