Sampson and Lunsford IN Scott County Virgina

My Mother is Beverly Sampson and her Father is William Edward Sampson and Mother is Lola Lunsford of Scott County VA. I know her Grand Father Zan Lunsford had a mill in Hiltons VA and her other Grand Father I believe was Clayton Fernoy Sampson. I'm unable to find any birth records for my Mother (Beverly Rhea Sampson) born in Scott County VA.,. Any information about either side of the family would be greatly appreciated. Thank You in advance, Mary Lakes