Background
Janet was the daughter of stockbroker Hugh Dudley Auchincloss, Junior. (1897–1976) and socialite Janet Norton Lee (1907–1989). In addition to elder half-sisters Jackie and Lee from her mother"s first marriage to stockbroker John Vernou "Black Jack" Bouvier III, she had three elder half-siblings from her father"s previous marriages: Hugh III (born 1927), Nina (born 1937), and Thomas (born 1937).