His Grace The 11th Duke of Marlborough

John George Vanderbilt Henry Spencer-Churchill, 11th Duke of Marlborough, DL, JP (born 13 April 1926), is the son of Lt.-Col. John Spencer-Churchill, 10th Duke of Marlborough and his wife, Hon. Alexandra Mary Hilda Cadogan. His principal seat is Blenheim Palace, in Woodstock, Oxfordshire. He is also a relation of The Duke of Devonshire and generational cousin of the war-time Conservative Prime Minister, Sir Winston Churchill. He is also a distant relative of Diana, Princess of Wales as both belong to the Spencer family.
The Duke of Marlborough ranked 224th in the Sunday Times Rich List 2004, with an estimated wealth of £185m. He allowed Kenneth Branagh to film his production of Hamlet at the ducal palace of Blenheim, and appeared in a small cameo in the motion picture.