Jacqueline Kennedy Onassis followed her everywhere and nicknamed her "Jackie O". During their marriage, the couple inhabited six different residences: her 15-room Fifth Avenue apartment in Manhattan, her horse farm in New Jersey, his Avenue Foch apartment in Paris, his private island Skorpios, his house in Athens, and his yacht "Christina O". Kennedy ensured that her children continued a connection with the Kennedy family by having Ted Kennedy visit them often. She developed a close relationship with Ted, and from then on he was involved in her public appearances. Aristotle Onassis' health deteriorated rapidly following the death of his son Alexander in a
Christina Onassis worth $500 million. The remaining 45% funded a foundation established in Alexander's memory, the Alexander S. Onassis Foundation. After a legal settlement, Jacqueline Onassis received $26 million from the estate. Christina was the focus of her father's attention until his death; he considered her his successor and trained her in the business operations of the Onassis business empire. She carried the mantle of the Onassis shipping empire, successfully running the business after her father's death. Christina received considerable media attention for her lavish lifestyle, spending habits, and turbulent personal life. Despite her wealth, she was often unhappy with her frequent