Okay, so I know I've been sharing some of my theories/genealogy work with some of you, but I want to bring a couple things to the forefront here on the main thread that I feel are big developments I've found over the last few days.
This is the area I believe TPR was living and working when he was in Texas:
Jefferson County, Texas - Wikipedia
Specifically I believe he was either living in Port Neches, Port Arthur or Nederland for a period of time long enough to impregnate MC's mother, skip town for a bit, but come back for long enough that MC would kind of know who he was. This lines up with the timeline of him working at Brown and Root (which had a presence in that area) as well as the oil rig - Gulf Oil was the big employer in Port Arthur at the time, and guess who worked there - 6-8 out of the ten or fifteen possible men I believe could be MC's grandfather!
I am continuing to go through public records, including birth certificates, marriage certificates and death certificates to see what I can dig up about the area and the family during that time, and I did find something really alarming:
There was a double murder in Nederland with TPR's exact MO in January of 1975. I am fairly sure that Jefferson County arrested someone in connection with it, but knowing TPR's actions going forward, I almost wonder if they arrested an innocent person for the deaths of these two young women... I'm going to keep digging through newspapers from around that time to see what they are saying about it, but it's something I wanted to bring up.
If TPR was in the area at that time, I have it narrowed down to roughly twenty women, barring an NPE, that could be the mother. However, I
have found 3-4 possible NPE/illegitimate children from would-be MC grandfathers and know that there are likely more I need to keep digging for, but I'm not sure how far I will be able to go as most of these likely NPE candidates have been deceased since the 1980's and I have pretty strong doubt that most of these would have siblings.