 The estate remained in the Queensberry family until 1824.It is believed that at some point in the early 19th century, William Douglas, 4th Duke of Queensberry planted the Nile Clumps to commemorate Admiral Nelson and had the hill fort landscaped as part of the grounds around the mansion.In 1824 the Antrobus family acquired the estate and it remained in their hands until 1915 when, after the last heir was killed in France, Lord Antrobus sold the grounds–-including Stonehenge-–to private bidders.