Name, year and place of birth, year of marriage, from an online family history written by daughter Helen Oliver found in February 2021 at:
https://wordpress70995.wordpress.com

Year and country of death, full date of birth, from death search on New Zealand BDM website in February 2021:
1979/27138. Oliver, Gladys Eleanor. Date of birth: 10 October 1911

Full date of death of 24 February 1979 from further searching in February 2021 on BDM Search by incrementally changing the date range for the death.

Country of marriage from search on New Zealand BDM website in July 2021:
1941/7223. Bride: Gladys Eleanor Acton-Adams. Groom: Brian Elliot Oliver

Full date of marriage of 5 July 1941 from further searching in July 2021 on BDM Search by incrementally changing the date range for the marriage.