John Bonventre was an uncle of Joe Bonanno who came to the US in 1933. So he was one of those few guys who were made into one of the five NY Families during a period when the books were officially closed. He was a captain though, never an underboss. In 1940 he was demoted by Bonanno after he had somehow offended Stefano Magaddino during a dinner party. However, Bonventre was upped to a captain´s rank again four years later. He retired to Sicily in 1958.

I know he was born in 1901 but have no clue when he passed away. His date of death can not be found on the usual researching sites like social death index etc. Perhaps Faith would know Bonventre´s year of death?