i read of your search for info on the parents of sisters born in KY. I looked on census of 1920 and found in Owensville KY, a family of John and Ade Oakley husband and wife and and baby less than a yr old named Ollie...a son.
Perhaps this John is related to Charles. Not finding Charles P Oakley except one who died in NY in 1919. Could be Senior Charles. Go to findagrave.com
Lots of Ollie Ingrams on 1920 census as daughters....none in Bath co. If you had census online which is through ancestry.com you could search this family and eventually find them I'm sure.