I hope we can connect!Remember there's a good possibility that these girls were Lewis's daughters as he had 20 children by 3 different wives!
I would post queries on Union Co.,OH. & Loudoun Co.,VA.sites as well as write the Public Libraries in both of those counties. They might have information on the Filler Family too.Also, check the census for Union Co.
P.S. If you come across anything on Nancy Filler Bowie let me know ok? Thanks!