DNA testing has never been more accessible. Spit in a tube, mail it off, and a few weeks later you have a breakdown of your ethnic origins and a list of potential relatives you’ve never met. For a lot of people, it’s the first real peek behind the curtain of their family history — and it’s genuinely exciting.
But then what?
The results sit there. The percentages are interesting but vague. The cousin matches are strangers. And the specific questions you actually wanted answered — who were my great-grandparents, where exactly did my family come from, why does nobody talk about that side of the family — remain unanswered. Jean Graugnard sees this constantly. DNA results open a door. They rarely tell you what’s behind it.
What DNA Testing Does Well
To be clear: DNA testing is a powerful tool, and Jean Graugnard uses it regularly as part of his research process. What it does well, it does very well.
Ethnicity estimates give a broad geographic picture of your ancestry — useful for orienting research, particularly when family stories are vague or contradictory. Cousin matching connects you to living relatives who share segments of your DNA, which can open entirely unexpected branches of research. Y-DNA testing traces the direct paternal line across generations with remarkable precision, and mitochondrial DNA does the same for the direct maternal line. For brick walls where documentary records simply don’t exist, DNA evidence can sometimes confirm biological relationships that paper never captured.
It’s also uniquely valuable for certain communities — particularly those whose records were systematically destroyed or never kept in the first place, such as enslaved African Americans, indigenous communities, and families who immigrated under anglicized surnames.
What DNA Testing Can’t Do
Here’s where people run into trouble. A DNA result will tell you that you are, say, 23% French and German. It will not tell you which ancestor was French, which parish they came from, when they arrived, who they married, or what their story was. Ethnicity estimates are population-level statistics, not biographical facts — and they shift as reference databases are updated, sometimes significantly.
Cousin matches present a different challenge. A list of fourth cousins is only useful if you can figure out how you’re connected. Without documentary research anchoring the relationship, most matches lead nowhere. The DNA confirms a biological link exists — but it takes records to explain what that link actually is.
DNA also cannot distinguish between different people with the same biological profile. It cannot resolve cases where the documented family tree and the biological one diverge — adoptions, non-paternity events, informal arrangements — without careful, sensitive documentary work alongside it.
Why Documentary Research Is Usually the Missing Piece
Documents do what DNA cannot: they put specific people in specific places at specific points and tell you what they were doing. A census record places your great-grandfather in a particular county in 1900. A marriage certificate lists his parents. A ship manifest records when he arrived and where he said he was from. A church register connects him to a community going back generations.
Jean Graugnard’s work is rooted in this kind of evidence — building the documented framework that gives DNA results context and meaning. In most cases, the two approaches work best together. DNA points toward a geographic origin or confirms a suspected relationship; documents then fill in the biographical detail that transforms a data point into an actual person.
So Which Do You Actually Need?
For most people starting out: both, in the right order. A DNA test is a reasonable first step — it’s affordable, it’s quick, and it can surface unexpected leads. But if your goal is to actually understand your family history rather than collect percentages, documentary research is where that understanding gets built.
If you’ve already taken a DNA test and the results feel incomplete or confusing, that’s not a failure of the technology. It’s just the starting line. Jean Graugnard works with clients at exactly this stage — taking what the DNA suggests and building the documented, sourced family history that turns those suggestions into answers.
About Jean Graugnard
Jean Graugnard is an ancestry and family history researcher specializing in family tree reconstruction, migration research, heraldic verification, and the kind of document-driven investigation that turns fragmented records into complete family histories. His interest in genealogy grew from his own research into the Graugnard family history — a project that uncovered long-lost relatives, forgotten migrations, and stories that had been lost for generations. He now brings that same dedication to clients across a wide range of backgrounds, combining historical documents, archival research, and DNA analysis to build family histories that hold up to scrutiny. Whether you’re just getting started or you’ve been staring at the same brick wall for years, Jean offers the expertise to move the research forward.
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