Hallo again Ian,
It has just occurred to me that the 1841 details you've just unearthed, plus the 1851 and 1861 details posted earlier would correspond more closely, in fact, to the James son of William & Sarah HUNT b. 1799. I may have my James's confused and Maria was the daughter-in-law of William & Sarah.
And the 1871 Census showing James, widower, aged 60, b. Longcot, could correspond better with James, son of Angel & Martha born 1808
As for the 1832 burial of James aged 24 I don't know where that fits in yet. It could possibly be the James born 1808, in which case the one in the 1871 Census is yet another one !
I'm going to have to stand back from this one and think objectively !
Anyhow, many thanks for all your help as usual. Greatly appreciated.
Nick