Bob: Augusta County was Virginia. Follow the county divisions from Augusta to Botetourt, Greenbrier, eyc Andrew Lewis was at the Battle of Point Pleasant, at the juncture of the Great Kanawha, (Kanawhy, Canawhy,etc,). Lewis went to Point Pleasant on The Midland Trail along the Kanawha. I grew up on The Midland Trail, now known as McCorkle Avenue, a part of which is not on the Trail, in Kanawha County. Before Kanawha County was Kanawha, it was Greenbrier, before that Botetourt, beforethat Augusta.
Now, for sources, fold3.com (NARA Records, wonderful site) has digitized pensions, etc for Revolutionart Wars, 1812, Civil War, and on up to somecurrent wars. Again, wonderful site.
Another great site is www.wvculture.org/vrr and other historical events and photos. Births, deaths and marriages are there, one of the first states to do that. That site is free and awesome. Also, familysearch.org will take you to those sources. Fold3 is free at libraries and you can print for .10 to .15. Small price for wonderful information.
Please feel free to ask for anymore information. Lewisburg, WV, Greenbrier County and all of West Virginia was Virginia before 1863. Many forget that.