Name, year and country of birth, date and place of marriage, from Sarah Ferguson (nee Churton) in June 2018.

Confirmation of year and country of marriage from Marriage search on New Zealand BDM website in June 2018:
1863/4983. Bride: Janet McGregor. Groom: George Grove

New Zealand Electoral Roll - Port Chalmers, Otago Roll for 1800-1881, found in June 2018:
Groves, George. Residential. Sawyers Bay. Farmer. Sawyers Bay, house, part sections 55, 66, 67, and 44
Groves, William. Residential. Sawyers Bay. Butcher. Sawyers Bay, house and land

Note: Woman did not receive the vote in New Zealand until the 1893 Election. Therefore, wife Janet would not be on the Roll.