Paul was made in the early 40s while in his mid 20's.

His initial exposure to crime was collections for his father, Joseph, who run a La Rosa lottery. It seems he moved on to bigger and better things on the coattails of cousin Carlo.

He was made capo in 1956, following the death of his uncle Francisco "Frank" Castellano who's crew he had been in.

Although information is sketchy, it seems he had a lot of money on the street as a loanshark.

His crew was one of the family's larger, especially after absorbing the robliotto/eppolitto regime in the late 1960's.

It was during this period he moved into legitimate business more as well..emcee meats/blue ribbon meats/dial poultry as well as various construction intrests. scaramix concrete.

He was upped to acting boss late 1975/early76 as Gambino began using him in more of this capacity as his health declined.
Nino Gaggi took over Castellanos crew and made official captain 1976.

I came across an old FBI report a while back that noted both Gambino and Castellano being involved in an unsolved homicide in 1933 at the request of Vincent Mangano. It suggested that it was Paul who had beaten a guy to death with a ball bat. Guys surname was Ardino (Arduino??)I've never been able to find any corroborating documents on the matter. I asked if anyone had ever come across this before a while back in another thread but never got a reply.