"Ontario Marriages, 1869-1927," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:FMVJ-FDH : 11 March 2018), Thomas Edward Merritt and Katherine Stuart Campbell, 09 Sep 1891; citing registration , Kingston, Frontenac, Ontario, Canada, Archives of Ontario, Toronto; FHL microfilm 1,870,468.
"Canada Census, 1881," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MVXJ-N3D : 20 May 2019), Catherine S Campbell in household of John Campbell, Kingston, Frontenac, Ontario, Canada; from "1881 Canadian Census." Database with images. Ancestry. (www.ancestry.com : 2008); citing John Campbell, citing Library and Archives Canada, Ottawa, Ontario.