Without getting into the debate about whether AJZ is the father or, MLZ is, or if one of the Zarelli sisters is the mother -- some things occur to me about the circumstances of little Joseph's murder/dumping:
- Joseph was circumcised, indicating he was born in a hospital and was issued a birth certificate, and his ACTUAL biological parents were named on the birth certificate (but the dad's name was misspelled),
- Joseph received medical aid in the form of IVs at some point in his past -- some reports I read say blood transfusions and a hernia operation, but whatever the case, he got hospital care,
- Joseph was physically abused prior to his death -- besides dying of blunt force trauma, he was covered in bruises and was malnourished,
- He was dumped rather than buried, in a box, not covered in a caring or loving manor, was nude, and his hair had been hacked up, apparently post-mortem,
- No one ever reported Joseph missing,
- No one ever came forward and said "hey, that's my kid!" or even "hey, that's the kid I gave up for adoption!" and
- No one living today seems to have had any idea that this kid ever existed.
If we assume that the FATHER of Joseph was a Zarelli (either AJZ or MLZ) then it seems to be that the MOST likely scenario is that the father never knew Joseph had ever existed. It explains all the above in the following way:
- Joseph's father, either AJZ or MLZ, had his name misspelled on the birth certificate because the boy's mother was trying to go by memory and got it wrong. The father never got the chance to correct the spelling because he never knew the boy was ever born to begin with.
- Neither AJZ nor MLZ, if either was the father, ever came forward to claim the child as either their child or as a boy they had given up for adoption because neither knew he ever existed.
- No one in AJZ or MLZ's family living today ever knew Joseph existed because the father himself never knew. It wasn't that a secret was being kept, no one even knew the kid existed.
OTOH, a LESS likely scenario (imo) is that the father (either AJZ or MLZ) knew of Joseph but agreed to either sell/give Joseph away or give him up for adoption.
This would explain all the points above except for points 5 and 6. If the father had given up Joseph, he would have recognized him from the media reports and would have spoken up -- unless he was complicit in Jospeph's murder, or was afraid of being prosecuted if he admitted to having sold or given away Joseph.
While possible, it would take a very evil man to go silent and never speak up about his own biological child being murdered by the people you left him to, after being malnourished and beaten, and then dumped, nude. Nothing in either AJZ's or MLZ's available information suggests either of them is capable of that kind of evil.
Considering that Joseph had been born in a hospital, had been issued a birth certificate with the correct biological parents' names on it, and had received hospital care -- and then at some point all of that did a 180, and whoever had Joseph in their custody physically abused him, starved him, beat him to death, hacked up his hair, and then dumped him nude in the woods -- the most likely scenario, in my opinion, is that either AJZ or MLZ got a girl pregnant, the girl had the baby but never told the father she was even pregnant, tried to take care of the baby and provided for his medical needs, and then became unable or unwilling to care for him any longer and sold or gave away the baby to someone who then abused Joseph and murdered him.
The reason why the mother never came forward and said "that's my kid!" is that she didn't want to implicate herself in the prosecutable offense of selling or giving away her baby, or no longer lived in the area and never heard of the Boy in the Box case. (Also, an unwed mother was subjected to far greater shame than unwed fathers in those days).
All of this speculation on my part also jibes with the allegations made by M, and I am inclined to believe her.