Newspaper articles of the period (30s/40s) refer to T Bostock, Fernhill Farm. In the 1939 register Thomas Bostock is listed as Rouncil Farm, Rouncil Lane, with Oak Farm adjacent (occupied by another Bostock).
I think this points to the westerly Fernhill being the Stanyer Farm, and the easterly Fernhill [aka Rouncil?] being the Bostock farm.