Lady Charlotte Spencer (1765-1766); daughter of John Spencer, 1st Earl Spencer, and Georgiana Poyntz (1765–1766) Parents Georgiana Spencer, Countess Spencer John Spencer, 1st Earl Spencer Children Siblings Georgiana Cavendish, Duchess of Devonshire Lady Louisa Spencer Henrietta Ponsonby, Countess of Bessborough George Spencer, 2nd Earl Spencer