My GGGGGfather was John McCoy. He was born in Scotland in 1752 and joined the North Carolina Line in the Revolutionary War in 1777 in Bladen County. Since his origins were in Scotland his name may have been changed from McKay. He lived in Rowan Co., Wilkes Co., Greenville District South Carolina before settling in Jefferson Co. Tennessee. I also found a record of a John McKay traveling from Campbeltown Scotland to Cape Fear North Carolina in 1770 aboard the Edinburgh.