Disregard that last suggestion. Parents of James Callow chr. 1817 were John Callow and Jane Kewley (not Kelly). They were part of my tribe and stayed on the Island.

So that leaves us with James Callow chr. 1785 Braddan or James Callow chr, 1787 Lonan. You will have to decide between the 1851 Whitehaven census (where he was staying with a daughter-in-law) or the 1861 census at the Preston Workhouse together with the burial record which probably came from the Workhouse. The 1841 census (rounded down) gives an age of 1786 and therefore may support the 1787 date.

You really need to see the death certificate of Jane (?) Callow and find out whether there are any other details available on James Callow in the Preston Workhouse archives.