The 1626 Rochdale Manor survey mentions a lesser known “castle” place-name, it is recorded as “Thrustcastel” which means the “leppers castle”. There is a “castle” is marked on the first series OS map, but this has been cut through by the M62 and is further east than the Newhey site.
I think this is “Thrustcastell” a prominent hill clearly visible just south of the M62 motorway at Newhey, it has a base station on top.
It looks like the product of glacial processes but it could have been used in earlier times or maybe the glacial sand soil was good farmland!
You can see for yourself on Google Earth or Microsoft Bing Maps. It is just north of Newhey at SD936120.
What do you think?