 The fourth Duke's younger son Lord George Cavendish and a Devonshire in-law, the third Duke of Portland, each used the house for at least two separate spells.Portland had some of the interiors altered by John Carr in the 1770s.Eventually Lord George, who was a rich man in his own right due to his having married an heiress, purchased the house from his nephew, the sixth Duke of Devonshire, for £70,000 in 1815.