Prior to 1789, the Virginia Commonwealth claimed the area of present-day Garrett and Allegany Counties, of Maryland. A 1771–1780 map of Virginias counties, shows Hampshire County, but the Virginia State boundary has Hampshire outside that boundary line. When conducting genealogical research, it is possible to find tax records for Hampshire County, Virginia included in Maryland records, and Maryland records in Hampshire County... Hampshire County was formed in 1758 by the Virginia Commonwealth and at its founding, included the present day counties of Garrett and Allegheny Counties in Maryland, and Hardy, Grant, Mineral, and part of Morgan Counties in what is now West Virginia.