Marshalls Farm Kempley (General)
It looks like it was a small farm , part of a larger estate. The OAKLEY's are described as Ag Labs so tenants in a small farm house / large cottage I guess !
I think the building disappeared in the 1940s /1950's using GOOGLE MAPS today the aerial view suggests a small coppice just west ( 50m) of the boudary of Allums Grove and say 400m east of Kempley Court.
http://maps.google.co.uk/maps?hl=en&tab=wl&q=kempley%20court
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Ἀριστοτέλης A Gloster & Hereford Boy in the Forest of Dean ><((((*>