found: Hornbook of Va. hist., 1994:p. 173 (counties in W. Va, formerly in Va.; Martinsburg, county seat of Berkeley County)
found: Martinsburg gazette and public advertiser, v. 28, no.1, 1826:(published in Martinsburg, Va.)
found: W.Va. place names, their origin and meaning, 1945:p. 404 (Martinsburg; first called Martin's Town; Martinsburgh; Martinburg; named for Col. Thomas Bryan Martin, a nephew of Lord Halifax and wealthy landowner; est. by legislative action Oct. 1778)
found: GeoNames, algorithmically matched, 2009(ppl; 39°27ʹ22ʺN 077°57ʹ50ʺW)
found: City of Martinsburg, West Virginia website, July 5, 2019:home page (City of Martinsburg; City of Martinsburg, West Virginia; Martinsburg; county seat to Berkeley County) - http://cityofmartinsburg.org/
