I believe at least one FBI source said Genovses members Al Ross and Patsy Erra were allegedly inducted during the 1940s. If this is accurate, it's likely there were more inductees during this period.
(Mind you, the source could have been confused about the dates and the real induction date was early 1950s which we know members were being inducted.)
As for when Mangano and Cirillo were inducted, Valachi is a pretty reliable source about the Genovese Crime Family membership in 1963 and he never included them on his list of members(as far as I can recall).
Besides Quiet Dom was a protege of the Pagano Bros who were only just made themselves before the books were closed.
