Hi Alex
Winwick burials are not on the NBI, which is odd, and the parish register burials which have been filmed by the LDS only go up to 1812, which is strange as baptisms and marriages go much later. I wonder if the burial register has been lost, although the BTs seem to be fairly intact, at least up to 1837. Have you looked at the BTs for a possible burial?
I assume he had children, presumably in Winwick as Susannah stayed there. When was the last of them baptised? I don't suppose he did anything really helpful like calling one of them Godfrey?
There are only 7 Farrington marriages in Hunts 1754-1837, and the first four up to 1781 were all in Gt Gransden. Yours was the only James.
There's a baptism on the BVRI of a James Godfrey Farrington at Gt Gransden on 26 Aug 1770, mother Elizabeth Farrington so presumably he was illegitimate, with a possible as to his father. There's no burial of a James Farrington in Gt Gransden, and no marriage. The age would fit with Susannah's age, but proving it's the same James is a different matter altogether, particularly as Winwick was on the border with Northants, so it's possibly more likely that he was from Northants than Gt Gransden which is 20 miles from Winwick.
More questions than answers I'm afraid
Regards
David