Name from birth search of son on New Zealand BDM website in November 2018:
1899/10941. Grimmer, Alfred Arnold. Mother: Helen Reid. Father: Alfred William

Year and country of marriage from search on New Zealand BDM website in November 2018:
1898/4591. Bride: Helen Reid Johnston. Groom: Alfred William Grimmer

Full date of marriage of 8 December 1898 from further searching in November 2018 on BDM Search by incrementally changing the date range for the marriage.