I doubt Onassis filled out many computer forms. Lol.

He bankrolled the casino. Seems to have held controlling interest.

Upon further reading, it sounds like Onassis was at odds with Prince Ranier. Monaco diluted his shares in the casino in the early 1960s down to 33%. and then brought him out for a huge profit shortly there after.

Ranier wanted Monaco to be accessible to all, and Onassis preferred only the rich.

Weird dynamic, but a sign of the times, post WWll.

I wonder where the Grace Kelley story got started?

I find the Prince vs Onassis story more understandable.
What monarch would want him as his partner?