Alexander Onassis of the United States Central Intelligence Agency (CIA) and the leader of the Greek military junta, Georgios Papadopoulos. Onassis's death had a profound effect on his father, who never fully recovered from the loss of his son. Aristotle Onassis sought to sell Olympic Airways after his son's death, and died two years later in March 1975. Onassis was buried alongside his son on Skorpios. Aristotle Onassis's will established a charitable foundation in memory of his son, the Alexander S. Onassis Public Benefit Foundation, based in the tax haven of Vaduz in Liechtenstein, and headquartered in Athens. The foundation received 45%
Tina Onassis Niarchos Lausanne, Switzerland. Her daughter, Christina Onassis, sued Stavros Niarchos, her mother's widower, for her mother's estimated US$250 million (in 1974 dollars) estate claiming the marriage should be annulled under Greek law. Christina later dropped the lawsuit and Niarchos returned all of his wife's money as well as her jewelry, artwork and other personal effects to Christina. Her only living descendant is her namesake granddaughter, Athina Onassis, Christina's daughter. Tina Onassis Niarchos Athina Mary "Tina" Niarchos (, , née Livanos; 19 March 1929 – 10 October 1974) was the second daughter of the Greek shipping magnate Stavros Livanos and Arietta Zafiraki.