"Ontario Marriages, 1869-1927," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:FMNF-KXM : 11 March 2018), William Wray Nicholls in entry for Harry Robert Nicholls and Florence Cameron, 14 Nov 1877; citing registration , London, Middlesex, Ontario, Canada, Archives of Ontario, Toronto; FHL microfilm 1,863,649.