In 1870-72, John Marius Wilson's Imperial Gazetteer of England and Wales described Birchover like this:
BIRCHOVER, a township in Youlgreave parish, Derby; 1 mile N of Winster. Real property, £1,152. Pop., 51. A rocking stone of about 20 tons is here.
A Vision of Britain through Time includes a large library of local statistics for administrative units. For the best overall sense of how the area containing Birchover has changed, please see our redistricted information for the modern district of Derbyshire Dales. More detailed statistical data are available under Units and statistics, which includes both administrative units covering Birchover and units named after it.
GB Historical GIS / University of Portsmouth, History of Birchover in Derbyshire Dales | Map and description, A Vision of Britain through Time.
Date accessed: 29th March 2015
Click here for more detailed advice on finding places within A Vision of Britain through Time, and maybe some references to other places called "Birchover".