Hi Spades, no there is nothing at all on his death certificate, not even where he was born, parents names, nothing except his age and the name of his wife (with an incorrect surname anyway).
I also have the Wedding Certificate - again, nothing about either of the parties parents, lineage, place of birth etc.
Double Irish - I ran a check on PapersPast and his name showed up but it was nothing to do with his immigration/settlement (it was an assault charge). Basically he only pops up in NZ when he marries Janet Ainslie Messer in 1876. He was last known to be in the UK in the 1871 census so I have a 5 year gap to try to fill.