I'm gonna say James Lanza of San Fransico.
A 4 decade run is hard to pull off. It can't be from the
5 Families cause of the rate of high turnover of bosses
Getting whacked or dying from old age.

Lanza was very successful in the olive oil trade.
To be beloved by your rank and file means
You let them earn and prosper.

If it's not Lanza then I'm thinking of that boss in
Upstate New York. I think it's the Binghampton Crime Family
I'm thinking of.