Thomas Gaddis (1742–1834) was a militia officer in the American Revolutionary War. He was born December 28, 1742, in Winchester, Frederick County, Virginia and married Hannah Rice in 1764; the same year he built Fort Gaddis, a refuge from the Indians, located on the Catawba Trail. In fact, Pennsylvania and Virginia had conflicting claims in the area Gaddis settled. Though he maintained his loyalty to Virginia, Gaddis also protected his investment by recording his patent with Pennsylvania authorities. By 1773, both states created new geo-political boundaries in recognition of increased white settlement. Pennsylvania formed Westmoreland County out of the larger Bedford County, and Virginia established the District of West Augusta. In 1776, West Augusta was further divided into three counties