When Aristotle Onassis, the Greek shipping magnate, met Maria Callas, the great opera diva, in 1957 they were both married to ...

Aristotle Onassis' longtime personal secretary Kiki Feroudi Moutsatsos tells PEOPLE about his affair with Maria Callas ...

whom she fondly calls “Aristo,” and the opera diva Maria Callas — while he was married to Jacqueline Kennedy Onassis, then the most famous woman in the world. Complicated would be an ...

Jon Collins-Black is sending treasure hunters on an expedition to find hidden chests with a combined prize value of more than ...

Aristotle Onassis' longtime personal secretary Kiki Feroudi Moutsatsos tells PEOPLE about his affair with Maria Callas Central Press/Getty; Ron Galella/Ron Galella Collection via Getty; Len ...

New details the most mysterious love triangles of the 20th century, that of Aristotle Onassis Maria Callas and Jackie Kennedy ...