His second wife had died during this year; in 1656 he married a third, who survived him, Margaret, daughter of Lord Spencer, niece of the earl of Southampton, and sister of the earl of Sunderland, who died at Newbury.
ROBERT SPENCER SUNDERLAND, 2ND Earl Of (1640-1702), English politician, was the only son of Henry Spencer (1620-1643), who succeeded his father, William, as 3rd Baron Spencer of Wormleighton in 1636.
Sir Robert's grandson, Henry, the 3rd baron, was created earl of Sunderland in June 1643, and was killed at the battle of Newbury when fighting for the king a little later in the same year.
Having passed some time in the court circle, Sunderland was successively ambassador at Madrid, at Paris and at Cologne; in 1678 he was again ambassador at Paris.
Early in 1683, however, through the influence of the king's mistress, the duchess of Portsmouth, Sunderland regained his place as secretary for the northern department, the chief feature of his term of office being his rivalry with his brotherin-law, George Savile, marquess of Halifax.