Thomas Jefferson paternity dispute

• DATE: Began in 1802
• THE EVENT: Investigations into long-standing allegations that Thomas Jefferson fathered one or more children by an enslaved woman named Sally Hemings involved both social science and forensic science.

SIGNIFICANCE: Forensic evidence in combination with other forms of evidence can play an important role in resolving paternity disputes even if the parties are deceased and the disputes are decades, if not hundreds of years, old.

As long ago as the early years of his US presidency (1801–09), Thomas Jefferson was accused of having a sexual relationship with Sally Hemings, who bore six or more children, although she was unmarried. James Callender, a disreputable journalist once employed by Jefferson who turned against him and worked for his political opponents, made these charges in newspaper articles he wrote for the Federalist press in 1802. Initially, some believed the charges because it was reported that Jefferson had made a promise to his wife, Martha, on her deathbed in 1782 that he would never remarry; it was alleged that his dying wife had suggested that Jefferson take an enslaved person as a mistress, as her father (John Wayles) had done. However, there is no historical evidence of this claim; this is likely folklore without documentary support, and scholarly sources dispute the story.

Sally Hemings was the child of John Wayles (Martha’s father) and had lighter skin. It was said that Sally bore a strong resemblance to her half-sister, Martha. Thomas Jefferson’s immediate family denied the charges that Hemings’s children were fathered by Jefferson and attempted to account for the fact that the two youngest Hemings boys looked exactly like Jefferson by opining that the father might have been one of two of Jefferson’s nephews, Peter or Samuel Carr.

Given that Callender had a clear political motive for smearing Jefferson, it was fairly easy for Jefferson to avoid answering the charges in print, although contemporary sources indicate that Jefferson denied the charges implicitly. The press representing Jefferson’s party—the Democratic Republicans—denied the charges and successfully portrayed the attack as a smear. After Jefferson’s death, most mainstream historians paid no attention to the charges, although they surfaced again in 1873 when one of Sally’s sons, Madison, asserted that he was the illegitimate son of Thomas Jefferson in his memoir, part of which was published as a newspaper article.

For more than one hundred years, the story was largely ignored in historical accounts. It was not until the 1990s, with modern archival scholarship and DNA analysis, that the historical consensus began to acknowledge Jefferson’s likely paternity of Hemings’s children. Annette Gordon-Reed’s exhaustive research built on these findings. Gordon-Reed’s work showed that it was highly probable that Jefferson and Hemings were involved in a long-term monogamous relationship. The compelling evidence included the fact that Hemings conceived her children only when Jefferson was at his home, Monticello, where Hemings lived, and Hemings never conceived any children when Jefferson was absent—as was frequently the case when he was in Washington.

Gordon-Reed’s findings also lent support to the 1873 claim of Madison Hemings that the Jefferson-Hemings relationship began when Sally Hemings was a teenager, while she was staying with Jefferson in Paris. France prohibited slavery at the time, and Hemings threatened to refuse to return to the United States with Jefferson unless he promised that he would emancipate her and any of her children by him upon his death. However, this claim is not supported by contemporaneous documentation (letters, diaries, or official records). It derives primarily from later oral testimony, especially Madison Hemings’s 1873 memoir, which historians treat with caution.

Jefferson’s estate was so financially depleted by the time he died that it could ill afford to emancipate any of those enslaved, but five enslaved people were freed, all members of the Hemings family. Sally Hemings herself was not legally emancipated in Jefferson’s will and remained listed as enslaved; she later had informal freedom granted by Jefferson family members.

DNA Analysis

Gordon-Reed published her findings without knowing that plans had been made to conduct Y-chromosome DNA comparisons   using samples from individuals claiming to have descended from Jefferson and Hemings. Because the Y chromosome is passed virtually unchanged from father to son, this method allowed researchers to test whether a male member of the Jefferson family could have fathered one of Sally Hemings’s sons. Because no surname-bearing descendants of Thomas Jefferson were alive to act as a positive control, the researchers used Y chromosome from the five living male descendants of his paternal uncle, Field Jefferson, who cooperated in the effort. The Y-chromosome  samples of these five men were compared with a sample from a male descendant of one of Sally Heming’s sons, Thomas Eston Hemings. (Sally Hemings’s oldest known son, Beverly, had no male heirs; her son Madison had heirs, none of whom have yet been tested.)

The Y-chromosome match was perfect except for minute, inconsequential differences. It is safe to say that forensic evidence established at the least that a male Jefferson, most likely Thomas Jefferson, fathered one of Sally Hemings’s sons. Technically, the father could have been Thomas’s brother, Randolph, but there is no evidence that he was even likely to have been present when Sally Hemings conceived Thomas Eston Hemings, and there is evidence that Thomas Jefferson was. The Y-chromosome DNA evidence also refutes the Jefferson family’s initial attempts to shift the focus to Jefferson’s nephews, as the DNA for their male descendants does not match that of Thomas Eston Hemings’s male descendant.

In the late 2010s, the Thomas Jefferson Foundation announced that the issue of the paternity matter had been settled and that Jefferson was indeed the father of Sally Hemming’s children. The foundation cited DNA results from a 1998 study published in the journal Nature, as well as two hundred years of written evidence and family records as the basis for its decision. The Thomas Jefferson Foundation’s consensus was reflected in the Monticello Foundation’s exhibits for public education.

Bibliography

Beran, Michael Knox. Jefferson’s Demons: Portrait of a Restless Mind. Free Press, 2003.

Burstein, Andrew. Jefferson’s Secrets: Death and Desire at Monticello. Basic Books, 2005.

Foster, Eugene A., et al. “Jefferson Fathered Slave’s Last Child.” Nature, vol. 396, no. 6706, 1998, pp. 27–28, doi:10.1038/23835.

Gordon-Reed, Annette. The Hemingses of Monticello: An American Family. W. W. Norton & Company, 2008.

Gordon-Reed, Annette. Thomas Jefferson and Sally Hemings: An American Controversy. University of Virginia Press, 1997.

James, Stuart H., and Jon J. Nordby, editors. Forensic Science: An Introduction to Scientific and Investigative Techniques. 2nd ed., CRC Press, 2005.

Lewin, Tamar. “DNA Study Suggests Jefferson Fathered Slave’s Child.” The New York Times, 1 Nov. 1998, www.nytimes.com/2000/01/27/us/study-finds-strong-evidence-jefferson-fathered-slave-son.html. Accessed 16 Jan. 2026.

“Monticello Affirms Thomas Jefferson Fathered Children with Sally Hemings.” Monticello, Thomas Jefferson Foundation, www.monticello.org/thomas-jefferson/jefferson-slavery/thomas-jefferson-and-sally-hemings-a-brief-account/monticello-affirms-thomas-jefferson-fathered-children-with-sally-hemings/. Accessed 18 Jan. 2026.

“Research Report on Jefferson and Hemings: Assessment of the DNA Study.” Monticello, Thomas Jefferson Foundation, www.monticello.org/thomas-jefferson/jefferson-slavery/thomas-jefferson-and-sally-hemings-a-brief-account/research-report-on-jefferson-and-hemings/ii-assessment-of-dna-study/. Accessed 16 Jan. 2026.

“Sally Hemings.” Encyclopaedia Britannica, Encyclopaedia Britannica, Inc., www.britannica.com/biography/Sally-Hemings. Accessed 16 Jan. 2026.

Scheffler, Immo E. Mitochondria. 2nd ed., John Wiley & Sons, 2008.