JM
Your comment is quite correct, I was previously unaware of that piece of information and will need to keep it in mind.
Essie
The family had always understood that Andrew came from Australia, this understanding was supported by Andrew's death registration which noted Sydney as his place of birth, the informant being Henry, Andrew's eldest son. However a copy Mary Christina's (Andrew's daughter) has been obtained and this shows Andrew's birth place as "near Plymouth, Devonshire, England". In that Andrew himself is noted as the informant on the birth registration, the thinking now is that he came from England to New Zealand via Australia.
Many thanks to you both for your interest.
RussJ