John Spencer-Churchill, 11th Duke of Marlborough, English businessman (born 1926)

John Spencer-Churchill, 11th Duke of Marlborough

British peer

John George Vanderbilt Henry Spencer-Churchill, 11th Duke of Marlborough, was a British peer. He was the elder son of the 10th Duke of Marlborough and his wife, the Hon. Alexandra Mary Hilda Cadogan. He was known as "Sunny" after his courtesy title of Earl of Sunderland.