The children of Alexander and Nancy (Campbell) McCoy were:
- John, born in Pennsylvania in 1782; unmarried; died at Kingston, Decatur County, in 1865. This son was a Ruling Elder in the Presbyterian Church and devoted his life to the duties of that office; he was well-known as an itinerant evangelist during the early days of this (Decatur) and adjoining counties, where he accomplished a good and useful labor. ...