Hi and welcome to Rootschat
If you check the 1841 image it shows that he was not "born in county" (ie) he was not born in Flintshire
His eldest son was 12yrs old so marriage approx 1827-1829 but marriages for that period do not show fathers names
Its possible he was born in Sesswick,
Do you have access to the 1851 census as that shows his birthplace as Gt Boughton which was mainly in Cheshire but was also the registration district for Bretton
As the 1841 shows him as not born in county, I think he was more likely b Cheshire
His age in 1851 is shown as 63 which is a big difference to 1841. I've checked the image and it's definitely 63 not 53 which gives a birthyear around 1788
Sarah is a widow by 1861
Clearly his age needs to be checked and I think the only way that can be done is by buying a copy of his death cert
That's were the problem is - there are 2 deaths for a Thomas Bradshaw in the Great Boughton reg district - one in 1853 and the other in 1855.
This is a useful website when his birthyear is more certain
http://www.csc.liv.ac.uk/~cprdb/