If you head out of Coleford towards Staunton, where the minor road you are on joins A4136 from Berry Hill towards Monmouth you will reach the Traffic lights.

This area is close to the old Robin Hood Iron Mine,and Marions Brick Kilns/Works , opposite the road junction is Marions Inclosure .

http://www.old-maps.co.uk/

coords 356400 211600

So the "Theme" feels right ! - save this is the Forest of Dean and not Sherwood :-)