Looking for Cash Dudley IN Virginia

My great grandmother's name is: Mary Blanche "Mollie" Cash. She married John Dudley. I have information on the Dudley side of the family but the only information I have for her is her name (no birthdate, place, etc.). The name of her parents are listed as: father - J.B. Cash and mother - Nancy V. Cash (no maiden name given). Any information is so appreciated. My grandmother's name is Bessie M. Dudley ("Mollie" Cash's daughter).