George Terry and Mavis Annie Terry nee Marshall http://goredc.govt.nz/cemeteries?iCEM_ID=3667&sSHOW=one&fname=&lname=Terry&cem=
There is a Dorothy Ann Hunter also buried in this Plot
Marriage Cert No 1932/9436 this can be obtained at the National Archives
Mavis Anne Marshall Birth Cert No. 1910/16128 - Mothers name Annie - Fathers name Lewis Henry
George Godfrey Terry Birth Cert No 1907/13744 - Mothers Name Mary Ann - Father name Edwin
I'm sorry I can not tell you of any living relatives best bet is to ring the Gore District Council and find out who Buried them.