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- [S55] Ancestry.com, Canada, Find A Grave Index, 1600s-Current, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2012;), Bertha Margaret “Bertie” Britton Keyes.
https://www.findagrave.com/memorial/163917156
- [S92] Ancestry.com, 1921 Census of Canada, (Name: Ancestry.com Operations Inc; Location: Provo, UT, USA; Date: 2013;), Reference Number: RG 31; Folder Number: 81; Census Place: Hibbert (Township), Perth South, Ontario; Page Number: 4.
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