David,

Thanks you are right that would make sense based on the age..that James Burnett died aged 67 on IOM. As he was listed on 1881 census aged 63. I think the entry on the same lawsons website for Catherine Burnett died 1908 aged 84 was our Great Great / Great Grandmother also dying in Michael several years after James.

I have ordered a death certificate for another man I think but will let you know if it further confuses the lineage.