'Williamson, Sydney Wentworth (1875–1954)', People Australia, National Centre of Biography, Australian National University, https://peopleaustralia.anu.edu.au/biography/williamson-sydney-wentworth-21784/text, accessed 28 June 2025.
27 September,
1875
Chiltern,
Victoria,
Australia
1 May,
1954
(aged 78)
Dandenong, Melbourne,
Victoria,
Australia
Includes the religion in which subjects were raised, have chosen themselves, attendance at religious schools and/or religious funeral rites; Atheism and Agnosticism have been included.