--- ---  # DNA Tests Proved This 92-Year-Old Presidential Rumor ## Video: The Top 10 Richest Presidents in American History [Watch (HLS stream): The Top 10 Richest Presidents in American History](https://cdn.jwplayer.com/manifests/TkU4JMjh.m3u8) (1:15)  _Published 2014-02-14. After adjusting for inflation, see who was America's most wealthy Commander-in-Chief_ by [Aditya Agrawal](https://time.com/author/aditya-agrawal/) ## Aditya Agrawal Aug 13, 2015 6:49 PM UTC  Warren G Harding, 29th President of the United States. Published in The American Presidents, (London, 1933). Warren G Harding, 29th President of the United States. Published in The American Presidents, (London, 1933).Print Collector/Getty Images by [Aditya Agrawal](https://time.com/author/aditya-agrawal/) ## Aditya Agrawal Aug 13, 2015 6:49 PM UTC DNA tests prove that former President Warren Harding fathered a child with his mistress. The online genealogy research website Ancestry.com tested the son of Harding’s long-alleged daughter by his mistress as well as confirmed relatives of Harding’s and found that they matched. The tests confirm a claim made by Nan Britton, who came forward after Harding’s death in 1923 to say that he had fathered her daughter, Elizabeth Ann Blaesing. Britton unsuccessfully sought financial support from Harding’s widow and even wrote a book called _The President’s Daughter_. Though the claim got little support during Britton’s lifetime, historians had mostly accepted that it was true. Last year, the Library of Congress released Harding’s love letters with another mistress, Carrie Phillips. That inadvertently spurred the DNA tests, as Harding’s grandnephew and grandniece, Peter and Abigail Harding, found similarities between those letters and Britton’s descriptions of Harding in her book. “My father said this couldn’t have happened because President Harding had mumps as a kid and was infertile and the family really vilified Nan Britton,” Peter Harding [told](http://www.nytimes.com/2015/08/13/us/dna-is-said-to-solve-a-mystery-of-warren-hardings-love-life.html?%5Fr=0) the New York _Times._ Abigail Harding added that there were now “too many nails in the coffin” and she was “completely convinced.” It’s not the first time that science has proven a presidential rumor. In 1998, [DNA tests showed](http://content.time.com/time/magazine/article/0,9171,15552,00.html) that Thomas Jefferson fathered a son with a slave, Sally Hemings. 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