Both were members of the Peerless Quartet.
Laurel & Hardy with The Avalon Boys feat. Chill Wills [in film Way Out West; big hit UK in '75; Chill Wills sang Stan's low voice, Rosina Lawrence his soprano part]
Tokio Blade [as Blue Ridge Mountains Of Virginia]
The Trail Of The Lonesome Pine was a popular novel by John Fox Jr., situated in the Cumberland Mountains of Kentucky; for rhyme reasons that became the Blue Ridge Mountains of Virginia in the song.