Hi Chas,
Thanks for that link I'll give it a go.
I read a post on the Northumberland board that said John Forester STENSON was a son of William STENSON - "The father of Coalville" who I understand was a prominent person in the area (there is an entry in Wikipedia for William). As John Forester also married Elizabeth STEPHENSON (the niece of George STEPHENSON - the railway engineer) I was hoping that, as the family was well known, there would have been a significant amount of research already carried out.
Regards,
Merve