Jack Sylvester Marwick, only son of the late Mr. Webster Marwick and Mrs. A. M'Donald, of Yangedine, to Miss Jean, eldest daughter of Mr. and Mrs. H. Smith, of York. [1]
[S2] National Library of Australia.
1920 'ENGAGEMENTS.', Sunday Times (Perth, WA : 1902 - 1954), 26 September, p. 7 Section: Second Section,http://nla.gov.au/nla.news-article57969994