Lewis County was formed in 1806. It's right on the border with Virginia, if I understand the maps I am looking at. Any theories about Elksburg? There's an Amazon Gift Card/certificate in it for anyone who can track it down.
Nathaniel Hamlin was born there and his father died there. While he left in the 1830s, some of the Hamlins stuck around for a while. The county itself went for the Union during the war, and continued to be Republican for a while thereafter.