Name, year of birth, from the biography of ‘Augustus Florance 1847 - 1897’ written by Richard L N Greenaway for the Millennium and for the 150th anniversary of the Canterbury settlement in New Zealand.

Second and third given name, country of birth from search on New Zealand BDM website in June 2020:
1884/20620. Florance, David Charles Hamilton. Mother: Elizabeth. Father: Augustus

Full date of birth of 21 July 1884 from further searching in June 2020 on BDM Search by incrementally changing the date range for the birth.

Preferred name of “Hilton”, professor of physics at Hong Kong University, transferred back to Welliungton to continue work with Sir Ernest Rutherford, with him when split the atom, from “Early Days of the Florance Family As Remembered by Gwen”, dated June 1998 as per copy from Kim Helen Cripps (nee Jamieson). Gwen was hilton’s niece (Hilton’s brother Robert’s daughter).

Year and country of marriage from search on New Zealand BDM website in July 2020:
1923/6465. Bride: Bertha Robson. Groom: David Charles Hamilton Florance

Full date of marriage of 27 November 1923 from further searching in July 2020 on BDM Search by incrementally changing the date range for the marriage.

Year and country of death, date of birth confirmed, from death search on New Zealand BDM website in July 2020:
1975/44156. Florance, David Charles Hamilton. Date of birth: 21 July 1884

Full date of death of 27 August 1975 from further searching in July 2020 on BDM Search by incrementally changing the date range for the death.

Listing in New Zealand Who’s Who published 1925, found in July 2020:
FLORANCE, Prof. David Charles Hamilton, professor of physics, Victoria College, Wellington. B. Chch. 1884, s. of 1. Augustus Florance; m., 1923 Bertha, s. of 1 Wm. Truby Robson, Chch. Ed. Chch, B.H.S., ; Cant. Coll.; M.A. 1908, M.Sc. 1909; lecturer in physics, Manchester Univ. 1912-9; prof of physics, Hong Kong Univ. 1920-3; do. Vic Coll. 1923; lieut. R.A. 1914-9; author of 4 papers in Philosoph. Magazine.

New Zealand Electoral Roll - Karori General Roll 1949, found in July 2020:
Florance, David Charles H, 2 Glen Road, professor
Florance, Bertha, 2 Glen Road, married
Florance, Jane Lidwell, 2 Glen Road, spinster [Daughter]