The Corleonesi, don’t know if this is true, but I think they got their start when Leggio killed some guy over a piece of Pecorino cheese.
From there the storyline really expands.
The murder of Navarra
The Fugitives of Leggio, Binu, even Denaro now
The multiple wars
The Magata meals
Borsellino and Falcone
Clandestine wedding of Riina and Bagarella
Maxi Trial
Attempted extermination of various blood families
Etc.
It could be done in English or in Italian, I think I would make a great movie or series
Il Capo dei Capi (2007), a miniseries, has been done though, I recommend that one. It inspired a whole generation of young wannabe gangsters in Holland.
