Who is Kerry Kennedy related to that is the only child of President John F. Kennedy?
Kerry Kennedy:  She is also a niece of the late President John F. Kennedy and United States Senator Ted Kennedy, and a cousin of former U.S. Ambassador to Japan Caroline Kennedy and Maria Shriver, the estranged wife of actor, bodybuilder, and former California Governor Arnold Schwarzenegger. Caroline Kennedy:  She is a prominent member of the Kennedy family and the only surviving child of President John F. Kennedy and First Lady Jacqueline Onassis.
Caroline Kennedy