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John James Jack Cosgrave (1877-1931) metal polisher, union official and political campaigner
Birth: 1876 at Kera, Victoria, son of Patrick Edward Cosgrove or Cosgrave (1843-1888) and Catherine, née Murphy. Marriage: 1901 in Victoria to Elizabeth Agnes ‘Bertha’ Hartigan. They had two daughters. Death: 18 March 1931 in hospital at East Melbourne.
Sources
obituary, Labor Call (Melbourne), 2 April 1931, p 5 https://trove.nla.gov.au/newspaper/article/249977484; Labour History 5; Samuel Merrifield papers, State Library of Victoria.
'Cosgrave, John (1876–1931)', People Australia, National Centre of Biography, Australian National University, https://peopleaustralia.anu.edu.au/biography/cosgrave-john-33162/text41367, accessed 28 April 2025.