Jacqueline Lee Bouvier (1929-1994)

Mrs "Jackie" Kennedy, afterwards Onassis; First Lady of the United States

Her only full sibling was Lee Radziwill. They were the half-sisters of Mrs Janet (Auchincloss) Rutherfurd and James Auchincloss. Their step-siblings included Mrs Nina Gore (Auchincloss) Straight who was the half-sister of Gore Vidal. In 1961, Mrs Kennedy founded The White House Historical Association.