Not aware of Belleville or Camden being among the earliest Families, so if there are references or documentation to support this I'm sure we'd all love to see it.

Nicola Taranto was not only an early member, but he was identified as a Boss of Bosses before Morello. Russo was definitely a member and Esposito a probable one. Cancemi, he's more of a possible one. He would have been among the first if he was.