Lee Radziwill — a former princess ... And Jackie’s second husband, Greek shipping tycoon Aristotle “Ari” Onassis, had been quite close to Radziwill before he wed her big sister.

Aristotle Onassis. She was accompanied by her sister, Lee Radziwill. and was six minutes late to watch the Stuttgart Ballet company perform "Eugene Onegin." That same three-act ballet production ...