I'm pretty sure it's not safe to say that there was a majority one way or the other in mccoy's region. Southern West Virginia was a heavily divided area during the American civil war, which is part of the reason West Virginia split from Virginia and joined the union. In fact, one incident that I wrote about in my thesis occurred in charleston, West Virginia (not far from the hatfields) where Samuel cabell, a diehard confederate, was murdered by local unionists in the aftermath of the civil war. (For more about his case see this article http://www.wvculture.org/history/journal_wvh/wvh32-2a.html). I think this sort of thing was far more likely in wv than anywhere else because despite divided loyalties it was officially a 'loyal' state and not subject to reconstruction and occupation