Edward Charles Brown IN New Zealand

Hello
I am seeking any information on Edward Charles Brown ,my
GGGGrandfather and his wife ? Lillian, Lily Keane, Lily
Kane {nee Thornton ? Thorburn}.
I am unsure as to her real name as every certificat I have purchased is different. They had one son that I know, my
GG Grandfather, another Edward Charles Brown.
The family seem to have come from Wanganuiarea but could have had connections in Auckland.
TIA Chris