Changed his name from Louis Sefton Cohen to Sefton Cullen in 1921. London Gazette, 4 October 1921, p 7830
'Cullen, Sefton Louis (1883–1975)', People Australia, National Centre of Biography, Australian National University, https://peopleaustralia.anu.edu.au/biography/cullen-sefton-louis-21481/text31770, accessed 30 March 2023.
3 August,
1883
Darlinghurst, Sydney, New South Wales, Australia
6 May,
1975
(aged 91)
Sydney, New South Wales, Australia