Mine are similar to Tony Russell's.

These people were all from south of Pennsylvania (not that they'd automatically have to be to my way of thinking, but in practice these folks were) and pursued pre-Monroe-meets-Scruggs style "hillbilly" music. Only a few of them were big on "western" music as distinct from "hillbilly," even. An inclusion that might surprise Tony is Billy Smythe, but he sang on a hillbilly show and had a special interest in writing blues songs.