"Canada, New Brunswick, County Register of Births, 1801-1920", database, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:D4JG-VNPZ : 4 October 2020), Nicholas Theriault in entry for Joseph Dominique Theriault, 1914.
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DNA Connections
It may be possible to confirm family relationships with Dominique by comparing test results with other carriers of his ancestors' Y-chromosome or mitochondrial DNA.
However, there are no known yDNA test-takers in his direct paternal line.
Mitochondrial DNA test-takers in the direct maternal line: