First let me say thank you for your kind words.Right now I'm rather confused about the West/Barnhill connection, been hard to follow that particular West family since it appears that several from the same family moved to different states?
What can tell you is the John Barnhill/Barnwell who received a pension for services in the American Revolution and was living in Henry, Georgia was not married to Susanna West, his wife was Mary Margaret, last name unknown.
Thinking that John Barnwell, as most of his records list him, was from a family of Barnwells who emigrated from Northern Ireland to Newcastle, Delaware in the early 1760s then migrated through Pennsylvania.By 1755 there were already Barnwells in Orange, North Carolina where John entered service, 23 May 1778 as an eighteen year old private for the North Carolina Continental Line.
It does appear that John and family lived in Hillsborough, Orange, North Carolina until he is found on the 1820 Census for Hall, Georgia.In 1830 John is a widower and living in Henry, Georgia where, 18 Dec 1832 he files his pension application.Next we find John on the 1840 Census for Cobb, Georgia were the next year he passes away, 8 May 1841.
There were two Barnwell men, James and Robert listed on the 1790 Census for Orange, North Carolina.Since John would have been thirty years old and his first son Robert is said to have been born, 1790 in Orange, North Carolina believe that one of these men was John.