Charles Spencer-Churchill, 9th Duke of Marlborough

Lieutenant-Colonel Charles Richard John Spencer-Churchill, 9th Duke of Marlborough, styled Earl of Sunderland until 1883 and Marquess of Blandford between 1883 and 1892, was a British soldier and Conservative politician, and a close friend of his first cousin Winston Churchill. He was often known as "Sunny" Marlborough after his courtesy title of Earl of Sunderland.