There's their ITM notice:
NZ Intention to Marry Notice.
National Library, Wellington.
Ref: BDM 20/22 1877 Hokitika p.561 No. 719 Microfiche R3594.
Notice dated 29 January 1877: Mary MCCARTHY, widow, a Servant aged 32 years, dwelling at Hokitika, length of residence 4 years, to marry Edward (Edwin) HALL, bachelor, a Butcher aged 27 years, dwelling at Hokitika, length of residence 4 months, at St Mary’s Church, Hokitika.
Certificate dated 7 February 1877. Reverend P.(A.?) MARTIN.
Regards, riley