SPENCER, Hon. John (1708-46), of Wimbledon Park, Surr. and Althorp Park, Northants.

b. 13 May 1708, 4th s. of Charles Spencer, M.P., 3rd Earl of Sunderland, by Lady Anne Churchill, da. and coh. of John, 1st Duke of Marlborough. educ. Eton c.1722; Grand Tour (France, Switzerland, Italy) 1725-7. m. 14 Feb. 1734, Lady Georgina Caroline, da. of John Carteret, 2nd Earl Granville, sis. of Robert Carteret, Lord Carteret, 1s. 1da. suc. bro. Charles, 3rd Duke of Marlborough, at Althorp 1734 under will of 1st Duke of Marlborough, and grandmother Sarah, Duchess of Marlborough, 1744.