Thanks for filling me in!I don't think I have any Gilreaths in my family, and I haven't been very successful at tracing my Alewine family back even as far as Newberry Co.!
However, I have a GEDCOM file from K. Allison (totally undocumented) that gives a rough outline of the Alewine family.You can find that on World Family Tree, or one of the lists of family trees.
This file suggests that the Alewines that lived near your Gilreaths were Joseph (b.1788 -- a very popular name in the family) and his brother Eli (b.1800).Both were sons of George and Catherine.George was the son of Michael and Mary Risinger.Michael was the son of John George Geneveser (changed to Alewine), who was the immigrant ancestor.
Joseph and Eli also had a brother George that married a woman named Susan.While I can't prove it, I believe these are my GGG Grandparents.At some point in time, they moved from Newberry to Abbeville (perhaps early on, as your plat information doesn't mention this George).
I read through your other posts, and see that my cousin Michael answered a lot of your questions there.In Abbeville, the Alewines attended Little River Baptist Church, as did the Loners and the Duncans (my other lines).It seemed to be common ground for a lot of them.
You might want to check out the Dutch Fork site -- they have a lot of other information besides the books I gave you the link for.
We should probably continue this discussion off line, if you have further questions.Feel free to email me separately, though I'm not sure I have much else to share.