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Smithsonian DNA Study Confirms Jefferson Fathered Hemings Children
By Drooid · · How we work
New Genetic Proof Resolves Long-Standing Paternity Question
Researchers at the Smithsonian Institution sequenced the genome of Thomas Jefferson from a lock of hair taken at his deathbed in 1826. The sequence was compared with DNA from 13 living descendants of both the Jefferson and Hemings families. The analysis concluded that Jefferson’s Y-chromosome matches that of Sally Hemings’s descendants, providing “extraordinary proof” that he fathered her children.
Historical Context of the Debate
For more than two centuries the possibility that Jefferson, the third U.S. president, sired children with his enslaved chambermaid Sally Hemings has been contested. Early 19th-century polemics dismissed the claim as slander, while a 1998 study by geneticist Eugene Foster first demonstrated a Y-chromosome link between a Hemings descendant and Jefferson’s male line. The new study builds on that work, adding fifteen years of additional sampling, genealogical research, and advanced sequencing techniques.
Genetic Findings and Statistical Odds
The project examined DNA from 13 individuals identified as descendants of the Hemings line and from a female-line descendant of Jefferson’s mother. Simulations of all plausible paternity scenarios—including Jefferson’s brother Randolph and Randolph’s sons—showed that the probability Jefferson was not the father of Hemings’s sons Madison and Eston is under one in 1,000. The odds therefore strongly favor Jefferson’s paternity.
Official Reactions and Family Responses
Smithsonian scholar Richard Kurin, who led the effort, described the result as “compelling” and emphasized that the institution does not hold an official position beyond presenting the evidence. He also noted the broader public interest in the question. Beth Shapiro, an ancient-DNA expert at the University of California, Santa Cruz, linked the project’s methodological advances to breakthroughs in modern forensic cases. Descendant David Miller, a sixth-generation Jefferson heir, welcomed the confirmation, saying it offers “recognition and acknowledgement” to the Hemings family. One Hemings descendant withdrew her DNA sample after the project’s book announcement, prompting the Smithsonian to discard that sample and repeat the analysis.
Verbatim Quotes
- “Other people may have other ideas, and I don’t think there’s necessarily an institution position,” — Richard Kurin, smithsonian scholar
- “This is a topic of interest to the American people. I didn’t invent this question, and it wasn’t invented by the Smithsonian. It goes back to [Alexander] Hamilton and Jefferson and [John] Adams,” — Richard Kurin, smithsonian scholar
- “It’s hard to say we ever would have gotten to this place, where all these tools were used to convict the Gilgo Beach serial killer, if it hadn’t been for starting this project,” — Beth Shapiro, an expert in ancient DNA at the University of California, Santa Cruz