Georgiana Clavering-Cowper, Countess Cowper English noblewoman (1715-1780) (1715–1780) Parents Frances Worsley John Carteret, 2nd Earl Granville Children John Spencer, 1st Earl Spencer Diana Spencer Siblings Louisa Thynne, Viscountess Weymouth Lady Grace Carteret Frances Hay, Marchioness of Tweedsdale Robert Carteret George Carteret Lady Sophia Carteret Partners William Clavering-Cowper, 2nd Earl Cowper John Spencer