A recent DNA study has confirmed that Thomas Jefferson, the third president of the United States and a key figure in drafting the Declaration of Independence, fathered children with Sally Hemings, an enslaved woman at his Monticello estate. Jefferson owned more than 600 enslaved people during his lifetime, and Hemings was one of the most well-known individuals in his household. The idea that Jefferson might have fathered Hemings's children has been a topic of discussion for over two centuries, with rumors circulating even before he became president in 1801. Jefferson never directly addressed the claims, and his family suggested that one of his relatives might have been the father instead. For many years, historians and biographers were skeptical about the possibility of Jefferson being the biological father of Hemings's children, mainly because there were no direct eyewitness accounts. However, a groundbreaking study in 1998 suggested a high probability that Jefferson was the father of at least one of Hemings's six children. This conclusion sparked debate, as some experts argued that the evidence could also support the idea that one of Jefferson's relatives, such as his brother Randolph, might have been the father. To resolve the debate, scientists from the Smithsonian Institution conducted a DNA analysis using a small lock of hair that had been collected from Jefferson. They compared this sample with genetic material from 13 living descendants of Jefferson and from two of Hemings's children, Madison and Eston. After more than 15 years of research, the scientists found that the chance Jefferson was not the father of Madison and Eston was less than 0.001 percent. They used an innovative method to recover DNA from hair samples that had no roots, confirming that the hairs belonged to Jefferson. The researchers also ran 20,000 simulations of possible paternity scenarios involving Jefferson, his brother Randolph, and Randolph's sons. The results showed that the odds of Jefferson not being the father of either Madison or Eston were less than one in 1,000. The study's findings suggest that descendants of Jefferson—whether from his marriage to Martha Wayles Jefferson or from Sally Hemings—might now see themselves as part of a shared, complex American family.