Henry Howe, Historical Collections of Virginia… (Charleston, SC: William R. Babcock, 1852), 385.
MONTGOMERY was formed in 1776, from Fincastle county,* and named from Gen. Montgomery: it is about 23 miles long, and 22 broad. New River runs on its southwestern border, which, with the head-waters of Roanoke River, drain the county. The lace of the county is broken and mountainous, though the streams are bordered with excellent soil, which yield heavy crops of corn and wheat. Pop. in 1840, whites 5,825, slaves 1,473, free colored 87; total, 7,405.
* Fincastle county was formed in 1772 from Botetourt, and extinguished in 1776 by the formation of Washington, Montgomery, and Kentucky counties from its territory.