Year and country of marriage from search on New Zealand BDM website in April 2019:
1885/532. Bride: Maria Collings. Groom: John Montezena. {Brian of nzolivers believes her surname is a married name from a first marriage and not her maiden name).

Full date of marriage of 11 January 1885 from further searching in April 2019 on BDM Search by incrementally changing the date range for the marriage.

Year and country of death, from death search on New Zealand BDM website in April 2019:
1887/888. Montezzino, Maria. Died age 40Y. [Therefore born circa 1847]

Full date of death of 16 February 1887 from further searching in April 2019 on BDM Search by incrementally changing the date range for the death.