Name, date of birth (1 Dec 1885) and death (26 Dec 1977), from Muriel Leo’s (nee Oliver, 1917-1998) Family Tree.
Month of birth is thought to be December but could be February?

Result from birth search on New Zealand BDM website in October 2018:
1886/1698. Oliver, Mary May. Mother: Elizabeth Ann. Father: Francis

Full date of birth of 1 December 1885 confirmed from further searching in October 2018 on BDM Search by incrementally changing the date range for the birth.

Year and country of marriage from search on New Zealand BDM website in October 2018:
1909/1057. Bride: Mary May Oliver. Groom: George John Christopher Knauf

Full date of marriage of 25 February 1909 from further searching in October 2018 on BDM Search by incrementally changing the date range for the marriage.

Result from death search on New Zealand BDM website in October 2018:
Registration 1978/27633. Knauf, Mary May, year of birth 1 December 1885

Full date of death of 26 December 1977 confirmed from further searching in October 2018 on BDM Search by incrementally changing the date range for the death.

New Zealand Electoral Roll - Raglan Main Roll 1972, found in June 2020:
Knauf, Mary May, 9 Brady St., Te Awamutu, widow [nee Oliver]
Knauf, Pearl Kathleen J., 9 Brady St., Te Awamutu, married [Daughter-in-law]
Knauf, Paul Francis B, 9 Brady St., Te Awamutu, painter [Son]
Knauf, Genevieve Joy C., 9 Brady St., Te Awamutu, spinster [Granddaughter]
Knauf, Janice Lynette, 9 Brady St., Te Awamutu, typist [Granddaughter]