Lady Sarah Spencer-Churchill (1921-2000); daughter of John Spencer-Churchill, 10th Duke of Marlborough, and Hon. Alexandra Cadogan (1921–2000) Parents John Spencer-Churchill, 10th Duke of Marlborough Mary Spencer-Churchill, Duchess of Marlborough Children Serena Russell Consuelo Russell Alexandra Russell Jacqueline Russell Siblings Lady Rosemary Spencer-Churchill John Spencer-Churchill, 11th Duke of Marlborough Lady Caroline Spencer-Churchill Lord Charles Spencer-Churchill Partners Theodorus Roubanis Guy Burgos Edwin F. Russell