Yes, James and John are especially possible as the father of my ancestor, James Gibson, b. 1776 in York, PA. Is there more information? I realize that in the 1700s it was generally the men only who were listed by name.
My James had a bro William but his mother would not be a widow in 1779, unless her November 1780 child was not her husband's. That baby (Sarah Gibson) was born in Amherst, Virginia, something I just learned this month, and a death of the father could explain why the mother was in VA (with relatives probably). But more likely, they had all moved to VA, sometime after 1776.
They had at least 3 children in York, PA: Eliz. in 1767, William in 1771, and my James in 1776. Then in 1780, Sarah was born in Amherst, VA, or so it says on Findagrave. From there, they went to KY and then IN.
I'm afraid I do not know their religion.
There are many other descendants who are stumped. I've decided the answer might lie among genealogy scholars of York, or early Gibson scholars, if there are such persons.
Unfortunately there were many lines of Gibsons, and mine tend to all be named James! Thanks so much for your reply.