Merriman Ancestory

Looking to trace the Merriman bloodline from England to New Zealand, John Merriman married Maude Fielding not sure of dates maybe late 1800's to early 1900's, lived in and around the Bay of Plenty, New Zealand.
I do not know anymore on John or his parents, brothers and sisters. Maude Fielding mothers name was Sarah Fielding who was prominent in her own right in and around Tauranga, Bay Of Plenty, New Zealand.

P.S I am the oldest grand-child from the Merriman side under Jack (John Charles Francis Merriman & Ivy Barnett) my grand-parents.

Kind regards

Percy goldsmith