Looking for Information on the Murdoch Family of New Zealand

Arthur Opua MURDOCH was born in Lower Hutt, New Zealand in 1886 - d.1977 and is buried in Paraparaumu Cemetery with his wife Louisa "Lovie" Strickland She was born in Awatere, Marlborough, New Zealand 1889 and died 1968.
Were his parents immigrants? - or maybe his grandparents?

They had 7 (known) children
Sons Bernard and Graham Murdoch both died in World War 2 exactly 6 months apart

I would like to know more about the other children,
Patricia Mary Murdoch married Harold Watkin Jones
June Louise Murdoch marred Donald Duncan Foote
Shirley Margaret Murdoch married Bernard John Comeskey
Ann Jocelyn Murdoch married Donald Grajam Graham
Dennis John Murdoch married Ann Cope