Hi John,
Thanks for your reply. This is very confusing! A lot of things don't add up. At the moment I am veering towards the two Thomas's being different people as you suggest, and the one I am interested in married Mary Whitamore. This is basically because the Whitmore family is living with Thomas and William in 1841. If Thomas had married a second time I doubt that would happen. Without any baptisms, I am, however, a bit stuck and I am doubting a lot of my info at the moment.
There is some interesting information in your message about the witnesses which I will look into (strangely enough Mary Goodship is the granddaughter of one of my direct ancestors, Mary Redman). I think I will reset on the Valentines and try and find out more information about William Valentine and find a definite birthplace. I have a note written by my Great Grandmother which says he was born in 1818 but not where.
Thanks again. I see from a lot of your posts you know a lot about Bedfordshire.
Cheers,
Sian