"Canada Census, 1901," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KHPM-4LJ : 9 December 2020), Gwendolyn Byfield in household of Edward Byfield, York (east/est), Ontario, Canada; citing p. 12, Library and Archives of Canada, Ottawa.
"Ontario Marriages, 1869-1927," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QKM5-DP5L : 13 March 2018), Christine Church in entry for William Horace Mcguire and Gwendolyn Christine Byfield, 13 Jul 1923; citing registration , Toronto, York, Ontario, Canada, Archives of Ontario, Toronto; FHL microfilm 2,266,884.
"Ontario Deaths, 1869-1937 and Overseas Deaths, 1939-1947," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:JD2M-XGD : 26 March 2020), Gwendolyn Christine Byfield in entry for Edward Blaney Mcguire, 16 Dec 1924; citing Orangeville, Dufferin, Ontario, 11348, Registrar General. Archives of Ontario, Toronto; FHL microfilm 2,022,137.
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