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
Jacqueline Kennedy Onassis plane crash in 1973. He died of respiratory failure at age 69 in Paris on March 15, 1975. His financial legacy was severely limited under Greek law, which dictated how much a non-Greek surviving spouse could inherit. After two years of legal wrangling, Kennedy eventually accepted a settlement of $26 million from Christina Onassis—Aristotle's daughter and sole heir— and waived all other claims to the Onassis estate. After the death of her second husband, Jacqueline returned permanently to the United States, splitting her time between Manhattan, Martha's Vineyard, and the Kennedy compound in Hyannis Port, Massachusetts. In 1975, she became