In 1870-72, John Marius Wilson's Imperial Gazetteer of England and Wales described Gentleshaw like this:
GENTLESHAWE, a chapelry in Longdon and Cannock parishes, Stafford; in Cannock Chase, 4 miles E of Cannock r. station, and 5 S of Rugeley. It was constituted in 1840; and it has a post office under Rugeley. Rated property, £1, 400. Pop., 625. Houses, 138. Pop. of the Longdon portion, 311. ...
Houses, 73. The property is divided among a few. The surface is aggregately very high; and includes the eminence of Castlehill, which commands a view of parts of nine counties. The living is a vicarage in the diocese of Lichfield. Value, £100.* Patron, alternately the Bishop of Lichfield and the Dean and Chapter. The church was reported in 1859 to need repair.
GB Historical GIS / University of Portsmouth, History of Gentleshaw, in Lichfield and Staffordshire | Map and description, A Vision of Britain through Time.
Date accessed: 28th March 2017
Click here for more detailed advice on finding places within A Vision of Britain through Time , and maybe some references to other places called " Gentleshaw ".