George Spencer, 4th Duke of Marlborough British Duke (1739-1817) (1739–1817) Parents Elizabeth Spencer, Duchess of Marlborough Charles Spencer, 3rd Duke of Marlborough Children Caroline Agar-Ellis, Viscountess Clifden Lady Anne Spencer George Spencer-Churchill, 5th Duke of Marlborough Henry John Spencer Francis Spencer, 1st Baron Churchill Lady Elizabeth Spencer Charlotte Spencer Lady Amelia Spencer Siblings Diana Beauclerk Lord Robert Spencer Elizabeth Herbert, Countess of Pembroke and Montgomery Lord Charles Spencer Partners Caroline Spencer, Duchess of Marlborough
