 Lord Whitworth died without issue at Knole on 13 May 1825, when all his honours became extinct.His will was proved on 30 May by the Duchess of Dorset, his universal legatee, the personalty being sworn under £70,000.The duchess died at Knole on 1 August following, and was buried on 10 August at Withyam, Sussex, twenty-two horsemen following her remains to the grave.