John Vernou Bouvier III

John Vernou "Black Jack" Bouvier III ( BOO-vee-ay; May 19, 1891 – August 3, 1957) was an American Wall Street stockbroker and socialite. He was the father of First Lady Jacqueline Kennedy Onassis and of socialite Princess Lee Radziwill, and was the father-in-law of John F. Kennedy.