Can I discuss my theory here or should we open up a new thread for Jack and Jill??
My theory is that something happened to Jill due to the abuse or neglect of the parents and they left Jack somewhere because people might ask too many questions if one twin remained with the family. It makes more sense to give a set of twins to family members than only one twin. I am thinking that one parent was the primary abuser and the other had more of a bond since Jack was left in a populated area where he would be found rather than a rural area where he would not survive.
Alternate theory, they left Jack in Newark and Jill someplace else so it would be more difficult to trace the kids back to the parents. Or they rehomed the girl with someone.
We still know very little,
I agree with the theory that Jill was the victim of abuse and/or negelct and died tragically. A cover up may have been involved. There's no death certificate for her IMO, because her death was not reported by authorities to avoid parental prosecution for abuse or neglect.
Concerned and protective family members were horrified that Jack could suffer the same fate, so they left him in an urban area, hoping that he would be adopted by caring people. Certainly a risky chance, but back in 1965, they didn't have the kind of social and protective services for kids like they do now. If Jack was abandoned by the "bad" parents, who abused and may have killed Jill, they probably felt they had to abandon Jack for the fear that he might remember the abuse and incriminate them. But at such a young age, I don't think his memory would be that developed.
I learned that most people's earliest memories, with rare exceptions begin at about age three. I think that the real Paul Fronczak's whereabouts, living or dead may never be known. The real Paul would have no recollection of the kidnapping and was probably raised by his kidnapper as her own kid, because she wanted a child of her own. The kidnapper could have made up a story about the mother abandoning Paul, or Paul may have been sold for money so that the kidnapper could maintain an illegal habit, say drug solicitation or prostitution.
I don't think she killed Paul, but I don't think we will ever know, or even the kind of life that the real Paul had, or now has.
A lot of these kids, abducted at say younger than three, would probably never know what happened to them, unless adopted circumstances, or communications in later years, prove that "These aren't my real parents." Just as Jack found out. However, a lot of people in those kinds of circumstances aren't going to do the investigative research that Jack did.
Satch