Muncy & Clevenger lines

Having trouble getting started on this line! Bertha's parents were said to have been George & Lorena Muncy Clevenger. I've not found anything to verify this, so can anyone help me? (Bertha did name one of her daughters, Lorena)
The family was known to have lived in Ohio at one time. Bertha married Robert Harless ca 1913 of Russell Co. VA & their children were born in the Sullivan Co. TN area. (Bertha named one of her daughters, Lorena)
Any help or suggestions are appreciated!