son and heir
being styled LORD BUCKHURST till 1720, and EARL OF MIDDLESEX 1720-65; educated at Westminster school; matriculated at Oxford (Christ Church) 27 November 1728; created M.A. (his father being then created D.C.L.) 15 September 1730; M.P. (Whig) for East Grinstead 1734-42, for Sussex 1742-47, for Old Sarum 1747-54, and for East Grinstead (again) 1761-65; a Lord of the Treasury, 1743-47; Master of the Horse to the Prince of Wales, 1747-51; P.C. 10 February 1766; Lord Lieutenant of Kent, 1766-69.
She, who was Mistress of the Robes and a Lady of the Bedchamber to the Princess of Wales from 1743 till her death