Name, year and country of marriage from Marriage search on New Zealand BDM website in July 2018:
1906/5351. Bride: Margaret Mary Browne. Groom: John Earl Robertson

Year and country of death, estimated year of birth, from Death search on New Zealand BDM website in July 2018:
1966/42293. Robertson, Margaret Mary, died age 87Y [Makes year of birth circa 1879]

Children found for Birth search on New Zealand BDM website in July 2018:
1906/22121. Robertson, William George. Mother: Margaret Mary. Father: John Earl
1912/17701. Robertson, Margaret Gertrude. Mother: Margaret Mary. Father: John Earl
1917/1595. Robertson, Earl Macintosh. Mother: Margaret Mary. Father: John Earl