Name, year and place of birth and death from on-line research by Brian Oliver of nzolivers.com

Date and place of marriage from:
https://www.wikitree.com/wiki/Hewish-1

Christening 21 October 1798 at Sidbury, Sidmouth, England. Arrived in Nelson with family on "LONDON”, 10 APR 1842.
https://www.wikitree.com/wiki/Snow-1984#Biography

Full date of birth from research file09 in May 2017. This file lists place of birth as Exeter, Devon?

A “William Snow” was a witness at the wedding of “Emma Snow” to “Joseph Dodson”, as per Marriage Certificate received from New Zealand BDM on 18 September 2020. Was this “William Snow” Emma’s father? Emma’s brother “William Henry Snow” lived and died in England so perhaps not Emma’s brother?

The barque "London" Passenger Information for the "Snow" family found in March 2022:
http://www.museumnp.org.nz/early-settlers/voyageDetails.aspx?voyageid=10
Voyage Name: London
Tonnage: 388
Departure Port: Gravesend
Destination Port: Nelson
NZC Ref: 34/2, pp.276-88; 36/9
Examiner Ref: 16 April 1842, p.22
Voyage Information: Captain Joseph Gibson commander, J F Wilson surgeon superintendent.
Sailed from Gravesend 17 November 1841. Arrived Nelson 10 April 1842, emigrants landed 12 April.
Passengers on The Voyage:
Snow, William. Age on arrival: 38. Profession: agricultural labourer
Snow, Mary. Age on arrival: 39. Profession: wife
Snow, Edwin. Age on arrival: 14. Profession: tailor
Snow, Emma. Age on arrival: 11. Profession: child
Snow, William. Age on arrival: 10. Profession: child
Snow, Thomas. Age on arrival: 8. Profession: child
Snow, George. Age on arrival: 6. Profession: child
Snow, Mary Ann. Age on arrival: 3. Profession: child
Snow, John Henry. Age on arrival: NR. Profession: child
Snow, Sarah Rebecca. Age on arrival: 2. Profession: child

Date and place of marriage confirmed from England, Select Marriages, 1538-1973, in March 2022:
Name: William Snow
Gender: Female
Marriage Date: 31 Aug 1820
Marriage Place: Cheriton Fitzpaine, Devon, England
Spouse: Mary Hewish

NOTE: Cheriton Fitzpaine is nine miles (15 km) north of the major city of Exeter and falls within the district council of Mid Devon.

Result from death search on New Zealand BDM website in March 2022:
1874/6340. Snow, William. Died age 76Y

Full date of death of 3 February 1874 confirmed from further searching in March 2022 on BDM Search by incrementally changing the date range for the death.

Place of burial as “Wakapuaka Cemetery” from cemetery records found in March 2022:
3741. Anglican Block 3, Plot 3:
SNOW, William - 3 Feb. 1874 aged 76 years

New Zealand Electoral Roll - Waimea Roll for a year between 1853 and 1864
Snow, William; Place of Abode: Waimea-east; Calling or Business: Farmer; Qualification: Freeholder and householder, Waimea-east

New Zealand Electoral Roll - Waimea Roll for a year between 1853 and 1864
Snow, William, waimea-east, farmer

New Zealand Electoral Roll - Nelson Roll for 1853, 1854
Snow, William; Place of Abode: Town of Nelson; Calling or Business: Storekeeper

New Zealand Electoral Roll - Nelson Roll for 1855, 1857
Snow, William; Place of Abode: Nelson; Calling or Business: Storekeeper; Qualification: Freeholder and householder, Trafalgar street

New Zealand Electoral Roll - Nelson Roll for 1856, 1858, 1861, 1864
Snow, William; Place of Abode: Nelson; Calling or Business: Storekeeper; Ground of Claim: Owner, Nelson and Richmond

New Zealand Electoral Roll - City of Nelson Roll for 1866, 1867, 1868, 1869, 1870, 1871, 1873
Snow, William; Place of Abode: Nelson; Qualification: Freehold; Property: Freehold land, part section 164, Trafalgar street

New Zealand Electoral Roll - Waimea Roll for a year between 1874/75
Snow, William, Nelson, freehold, dead