Who is Elizabeth? Was that really her name? So many more things to research.
Is Elizabeth the woman in the barrel or is she the mother of Evans' daughter? Elizabeth Mary Byron (aka Elizabeth Winn aka Elizabeth Underwood) went missing from Oxnard CA in 1978. She doesn't have DNA in the system.
Or maybe Sherry Elizabeth Roach missing out of San Mateo, CA in 1976? Young and vulnerable, living in a halfway house. She does have DNA in the system so hopefully it would have indicated a match to the little girl in the barrel if she were the mother of Evan's child... but ...
And what if the "Elizabeth" signing for mail in Manchester is NOT the woman in the barrel or the mother of Evans' child but another woman that he ran into on his travels. Perhaps someone useful to him because she drove, had a vehicle, and could help with a child. This woman went missing out of TX and her car was found near San Bernadino, CA.