Dale, that's why I try to list what the current place name is also; e.g.: "Harrison County, Virginia (now Ritchie County, West Virginia), United States". Harrison County still exists, but in 1800 it was MUCH larger -- it contributed territory to seven other counties over the years as boundaries shifted. It's a bit wordy, but it's the most accurate way to describe a location. Old maps are one of a genealogist's best friends...