Crash on Family Tree Circles

I am trying to find family of Henry Rupert REAY who married Charlotte Rose KENNEDY in Hawkes Bay New Zealand during 1962. I believe there could be children by the name of Robert Allan REAY, Donald Rupert REAY, Terresa May REAY. these names may not be issue from Henry and Charlotte but address's given in electoral rolls up to and including 1996 Napier New Zealand show sharing of address's. After 1996 they seem to have dissapeared. I am a first cousin of Charlotte Rose KENNEDY and would like to complete this arm of my family tree. Any help or information would be most greatfully received.