Name, date of birth of 6 Jan 1830 and place of birth of London, England from on-line research by Brian Oliver of nzolivers.com in April 2017.

Date of birth given as 21 February 1830 in Pedigree Chart prepared by Kathleen Maud Brooks (nee Oliver) and forwarded to Brian of nzolivers.com by Helen Shirley Oliver. Date of birth not changed at this point.

Date and country of death from Pedigree Chart prepared by Kathleen Maud Brooks (nee Oliver).

Town of death of “Nelson” from on-line research by Brian Oliver of nzolivers.com

Brian found second name beginning with “L” from birth notice of her daughter, Katie Maria Dodson, on Paperspast website in June 2017:
NELSON EXAMINER AND NEW ZEALAND CHRONICLE 18 MARCH 1863
Births.
On the 3rd February, at Blenheim, Mrs. EL Dodson, of a daughter.

Date of marriage of 10 December 1857 - source unknown

Place of marriage of Nelson, date and place of burial, from research file09 in May 2017

Result from marriage search on New Zealand BDM website in September 2020:
1857/1960. Bride: Emma Snowy. Groom: Henry Dodson

Full date of marriage of 9 December 1857 from further searching in September 2020 on BDM Search by incrementally changing the date range for the marriage.

Full date of marriage of 9 December 1857 confirmed, place of marriage as Nelson confirmed, from Marriage Certificate received from New Zealand BDM on 18 September 2020.
Note: Name of parents not listed. Therefore cannot confirm spelling of husband Joseph’s mother’s maiden name of “Reid” or “Reed”?

Emma arrived in Nelson, New Zealand, aged 11, with her parents and siblings on board the barque “London”:
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

Result from death search on New Zealand BDM website in March 2022:
1883/6562. Dodson, Emma. Died age 50Y

Full date of death of 29 June 1883 confirmed from further searching in March 2022 on BDM Search by incrementally changing the date range for the death.

Place of death was not Nelson. In March 2022, place of death is "Blenheim, Marlborough District, Marlborough, New Zealand":
https://www.findagrave.com/memorial/205948147/emma-dodson

Place of burial from Omaka Cemetery, Blenheim, records page 29, found in March 2022:
Block: 9, Row: 32:
Plot: 414. b. HENRY DODSON d. 8 May 1892 a. 64
Plot: 414. c. EMMA DODSON WIFE OF HENRY DODSON d. 29 JUNE 1883 a. 50