
1) Ari
Found on
https://www.crosswordclues.com/clue/onassis

1) Aristotle 2) Aristotle in the 20th century 3) Aristotle of greece 4) Follower of Aristotle 5) Greek shipping magnate 6) Greek tycoon aristotle 7) Groom in 1968 headlines 8) Groom in 1968 news 9) Groom of 1968 10) He was callous to Callas 11) Kennedy follower 12) Latter-day aristotle 13) Man in the news
Found on
https://www.crosswordclues.com/clue/onassis
No exact match found.