"Ontario Marriages, 1869-1927," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KZB8-X91 : 8 March 2021), Dora Gosselt in entry for John Crock and Martha Drewe, 05 Dec 1900; citing registration , Wilberforce, Renfrew, Ontario, Canada, Archives of Ontario, Toronto; FHL microfilm 1,871,078.
"Canada Census, 1901," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KHL2-XP8 : 23 February 2021), John Crock in household of John R Weinholdt, Nipissing, Ontario, Canada; citing p. 8, Library and Archives of Canada, Ottawa.
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