Name from birth search for daughter on New Zealand BDM website in June 2020:
1879/6275. Johnson, Emily. Mother: Louisa. Father: Oliver

Year and country of marriage from search on New Zealand BDM website in June 2020:
1875/68. Bride: Louisa Jones. Groom: Oliver Johnson

Full date of marriage of 23 March 1875 from further searching in June 2020 on BDM Search by incrementally changing the date range for the marriage.