DNA testing pairs beautifully with French-Canadian genealogy — but it also behaves differently for this population than for almost any other, because French-Canadians descend from a small founding group and are all, in a sense, related many times over. Understanding that is the key to using DNA well for Québec and Acadian roots.
Choosing a test
Our guide to the best DNA test for French-Canadian ancestry compares the major options, and our head-to-head on AncestryDNA vs MyHeritage helps you pick between the two leaders for French-Canadian research.
The endogamy factor
French-Canadians share enormous amounts of DNA through pedigree collapse and endogamy — the same ancestors appear over and over in everyone’s tree. This inflates how close DNA matches appear and makes French-Canadian DNA results easy to misread. It is the single most important thing to understand before you interpret your matches.
From matches to ancestors
Because Québec’s paper records are so complete, French-Canadians are unusually well placed to connect DNA matches to documented ancestors. Learn how to find French-Canadian relatives with DNA and tie them firmly into your tree using the great Québec databases.