↑ Birth - "New Zealand, Civil Records Indexes, 1800-1966," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:Q24V-KCSR : 27 November 2017), Helene Friedrich, 1880; citing Birth, New Zealand, registration number 1880/8812, Archives of New Zealand, Wellington.
↑ Marriage - Western Australia BDM Marriage index - Bunning Frederick William Kenneth; M; Friedrich Marie Sophie Helena; F; Perth; 1900; -; 1483; 1900
↑ Marriage Notice - Family Notices (1900, December 25). The West Australian (Perth, WA : 1879 - 1954), p. 4. Retrieved August 17, 2023, from http://nla.gov.au/nla.news-article23850546
↑ Death - Victoria BDM Death index - Event: deaths; Registration number: 14791 / 1961; Family name: BUNNING; Given name(s): Helene Marie Sophie; Place of event: BRIGHTON NORTH, Australia; Personal detail Mother's name: Unknown; Mother's family name at birth: UNKNOWN; Father's Name: UNKNOWN
↑ Death Notice - ryersonindex.org - BUNNING Helene Marie Sophie; Death notice; 10AUG1961; Death; 82; late of North Brighton; The Age (Melbourne); 12AUG1961
"England and Wales Census, 1911," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:XW57-5FB : 9 May 2019), Helena Marie Bunning in household of Frederick William Kenneth Bunning, Lambeth, London, England, United Kingdom; from "1911 England and Wales census," database and images, findmypast (http://www.findmypast.com : n.d.); citing PRO RG 14, The National Archives of the UK, Kew, Surrey.