Just to add to the confusion, I have just found a birth record on IGI for Henry Bishopp 1806 Gainsborough! That's all it says! Great 
One of those which should be ignored!

Based solely on the assumptions that
1) people were married in the place they were born;
2) men were aged 25 when they married.
Note there is a matching one for Elizabeth ROOKS, 1808 Gainsborough based on
1) people were married in the place they were born;
2) women were aged 23 when they married.
No firm basis in fact!