 The special relationship with the United States continued after the election of President John F. Kennedy, whose sister Kathleen Cavendish had married William Cavendish, Marquess of Hartington, the nephew of Macmillan's wife.He was supportive throughout the Cuban missile crisis of 1962 and Kennedy consulted him by telephone every day.The British Ambassador David Ormsby-Gore was a close family friend of the President and actively involved in White House discussions on how to resolve the crisis.