Name of “Helena Mary Adamson” from Ross Wilson in an email dated 20 March 2022. Ross is a descendant from a brother of Hugh Wilson (who married Rose Oliver in 1902). Ross Wilson is originally from Devonport Auckland, although he now lives in Canada.

Year and country of birth from search on New Zealand BDM website in January 2023:
1879/1398. Adamson, Helena Mary. Mother: Sarah Jane Father: Stephen
Full date of birth of 3 January 1879 from further searching in January 2023 on BDM Search by incrementally changing the date range for the birth.

Different surname of “Swanson”, year and country of marriage from search on New Zealand BDM website in January 2023:
1899/4607. Bride: Helena Mary Swanson. Groom: Francis Edward Wilson

Full date of marriage of 11 October 1899 from further searching in January 2023 on BDM Search by incrementally changing the date range for the marriage.

In regard to different surname of “Swanson”, no previous marriage for Helena Mary Adamson could be found?

Further research in January 2023 found a record of marriage in the New Zealand Marriage Index with name as, “Helena Mary Adamson”.