I fixed the name for Philip Thomas, added the rest of his children, and uploaded sources.
The surname “Thomas” and the forename “Elizabeth” are common-enough names for a woman born in the 1730s in Maryland (or nearby).
https://en.wikipedia.org/wiki/Thomas_(surname)_
At that time and place, I would expect a) Welsh and / or English origin b) and / or Society of Friends c) and / or anglicized German origins.
This is not a matter of “cut happy,” this is a matter of disambiguation. Apparently we have a similar problem on the Thomas Johnson side! Which is an even “more” popular name. Welcome to “no record” American genealogy. Oye.
Here’s a book I’m going through now, it includes descent from Evan Thomas. I don’t think the Elizabeth Thomas we’re looking for is in it - she’s of Montgomery County, Maryland, supposedly - but more eyes on are welcome. “Search“ should help. https://archive.org/details/genealogicalnote00thom/page/18/mode/1up...+