So you’re saying that particular area’s allegiance went more with “West Virginia” than “Virginia”?
Even if you don't know where those troops came from all you have to do is look at the election results ~ wherever John Bell won, that's definitely Union territory. Check out references to: Constitutional Union Party.
There were FOUR major parties running in 1860. The Republicans were considered the SECOND major party having established themselves as a power in 1856 elections.
The Democrats were split numerous ways.