Name, date of birth, date and place of first marriage to Harry, from a document “Descendants of Charles Coombs (Dr.) Clark” received from Linda Burge in an email dated 4 June 2017. Linda’s great-grandmother’s (Frederica J Horneman) sister (Emma C Horneman), married Henry G Clark (b.1827).

Brian of nzolivers.com found in June 2017:
Year and country of second marriage, to Richard, from the New Zealand Marriage Index, Folio number 2264.

Linda emailed a clipping from Paperspast on 4 June 2017, Marlborough Express 24 October 1890:
Hillman-Clark.-On 23rd October, 1890, at the Church of the Nativity, Blenheim, by the Rev. T. S. Grace, Harry Hillman, of Eastbourne, Sussex, England, to Florence, fourth, daughther of Henry Gostling Clark, of Blenheim.

MARRIAGE.- Yesterday afternoon there was quite a large gathering of ladies at the Church of the Nativity to witness the marriage of Mr H. Hillman of Renwick town to Miss Florence Clark, youngest doughter of Mr H. G. Clark, Commissioner of Crown Land for Marlborough. The Rev. T. S. Grace performed the ceremony; and Mr P. Clark, brother of the bride, acted as groomsman. After the service the party drove to Mr Clark's residence, and later in the afternoon the newly married couple left for their home at Renwick, taking with them the best wishes of their numerous circle of friends for their future happiness and wellbeing.
Marlborough Express 24 October 1890

Date of death from Notices of Deceased Estates, under the name of ‘Dunn, Florence Edith Elvira’.

Year and country of birth from search on New Zealand BDM website in March 2022:
1870/22660. Clark, Florence Edith Elvira. Mother: Emma Caroline. Father: Henry Gostling

Different date of birth being 19 July 1870 from further searching in March 2022 on BDM Search by incrementally changing the date range for the birth.