you said your 3xgreat grandfather was John Alfred Porter b. about 1794 in Frederick Co. VA.
You said your John Alfred Porter b. abt 1794 was Isaiah Porter
and was married 3 times.
I have a Alfred Porter b. 1802 in Frederick Co. VA but he is the son of Philip Porter b. 1750 VA and wife, Nancy Ann Brent
Could Isaiah Porter and Philip Porter be the same one, perhaps Philip Isaiah or Isaiah Philip Porter.
I did not understand what you meant the family without John remained in Frederick Co. VA. Perhaps we are not talking about the same person, but maybe they are related. I do not know the parents of my Philip Porter b 1750 VA nor any of his siblings. You can write me direct at firstname.lastname@example.org
Perhaps we can work together on these Porters.
Dottie Porter Himes