Here's an interesting snippet.
An Allan MacDonald died in New Zealand on 1 August 1893 aged 62, and the New Zealand Herald published a short obituary on 2 August 1893 in which they mentioned that he was a former Member of the General Assembly representing the East Coast electorate, but had suffered some reverses in recent years.
The following day it published an apology, saying that it was Mr Allan MacDonald of Coromandel who had died, not the former politician.
Is it, I wonder, possible that this is the source of the suggestion that Allan McDonald MHR, brother of James and Donald, was born about 1830/1831?
Also interesting that the apology mentions his numerous friends in Auckland, some of whom had known him from boyhood. Was he, therefore, already in Auckland as a boy? Or had so many of his boyhood friends also emigrated that the number of them in Auckland was noteworthy?
The Poverty Bay Herald of 7 August 1893 comments on the mistake, saying that the many friends in Auckland of Allan McDonald, ex-MHR, as well as being grieved, were at the same time surprised, for the subject of the par [sic] is in Otago.
(Just to add to the general confusion, another Allan McDonald, aged 30, chief officer of the barque Celtic Burn, disappeared after passing Port Phillip Heads on 23 February 1899.)