I beleive you've been in contact with Debbie Kennet. There seems to be quite a few on the Tidbury trail now.
My mother in law is the daughter of Fredrick Tidbury (9the Folly Newbury) and Catherine Olive Brown.
Fredrick is the son of Edward who we thought was the son of William and sarah ie Brother of Mary Ann. However we are having some consistency problems with the link between Edward and William. I should have Edwards birth and marriage certs this week. (did you know Peak House in Newbury will do free searches? if the find a cert the charge is £6.50 for the copy. Theres no charge if they don't find anything.
I think Debbie has sent you some of my info. I also have a booking for Newbury Library on Monday when I hope to clear up a few things.