Hi Don....This is a strange lot for sure. On NSW BDM there are two marriages same year 1871 for what appears to be two brothers. One marries Sydney John Newman-Oldman to Jane Riley. Same year James Newman-Oldman marries in Braidwood NSW.
John and Jane have 16 children

variously scattered across the Monaro region near Canberra NSW. Quite a few die young, some survive a bit longer. Must have been interesting around the dinner table.
James and Amelia had 10 children one of which was a
Priscilla 
She died young along with two others who both died 1889.
I dont believe you will find a Lindahl/Lindhal/Lindbeck travelling to NZ. You might find a Newman or a Newman-Oldman though.
Neil
I meant to say that although these two married under the name of Newman-Oldman, they both dropped the Oldman for the registrations since.