Hi Rich,
Your ancestor is listed in Discharged in NZ, by the Hughes.
It states he was a blacksmith, born at MULLABRACH, (I would think that to be
in Ireland). He joined the 58th Reg. 26. o5. 1838. He left London on the
'William Jardine', a convict ship, where he would have been a guard, 01.07.1844. He was then on the 'HMS North Star Velocity' to Auckland, NZ. 1845.
The death of Bartholomew McIlroy is registered at BDM Internal Affairs NZ, as 1869. I didn't find a marriage record. There are 2 children born between 1845 and 1865 which may have been his, but parents not listed. They are
Rose Ann, born at Auckland 1855: and David Thomas Christie, born 1865.
Hoping this is some help in your search. Every best wish, Bev