He amassed the world's largest privately-owned shipping fleet and was one of the world's richest and most famous men. Aristotle Socrates Onassis ( / oʊ ˈ n æ s ɪ s/, US also /- ˈ n ɑː-/ Greek: Αριστοτέλης Ωνάσης, romanized: Aristotélis Onásis, pronounced 20 January 1906 – 15 March 1975) was a Greek and Argentine business magnate.
