Hello Jackie
I took an interest in Christopher Cookson years ago, as my family have the same surname and hail from Northampton from about 1817. Most Cookson's originate from 'up North'; my own Cookson's were from Cheshire in the 1700's at least. I don't think our Cookson families are related at all; mine were poor labourers but I have a little information on your family in my database.
Christopher Cookson was the Vicar of St Mary the Virgin, Dallington, Northampton. He died around 1870. If there is anything I can look for in the Dallington registers just let me know. I could look to see if that is where Christopher is buried.
Regards
Janet