"Ontario Marriages, 1869-1927," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:FMNB-NVH : 10 April 2015), Emelie Langlois in entry for Pierre Pitre and Mary Langlois, 05 Sep 1880; citing registration , Sandwich East, Essex, Ontario, Canada, Archives of Ontario, Toronto; FHL microfilm 1,869,507.