I provided some info on your "loyalist" question in another post. But I must mention that there are currently 1894 descendants and spouses of James Grider (b 1755) and Isabel Blair (dau. Colbert Blair) on my web site at:http://mysite.verizon.net/vze1uj96/blair/
The site is fairly new, but coming along. I have John Grider listed on the Military page, and this in his notes: "John entered Rev. War service in March 1778 in Burke Co. NC".