1931 1931. Silver print RARE PORTRAIT OF THE BIOLOGICAL DAUGHTER OF WARREN G. HARDING, THE 29TH PRESIDENT OF THE UNITED STATES, INSCRIBED AND SIGNED BY HER AND HER MOTHER, NAN BRITTON IN 1931. In 1927, Nan Britton's book The President's Daughter was published by Elizabeth Ann Guild, publicly announcing that her daughter Elizabeth Ann Harding was the daughter of the President of the United States, Warren G. Harding. Nan could never produce primary source evidence to prove that Harding acknowledged his paternity of the child. After Elzabeth die on November 17, 2005, her son claimed that his mother was not interested in seeking DNA evidence confirming paternity. Finally in 2015, in the article DNA Is Said to Solve a Mystery of Warren Hardings Love Life , The New York Times reported that genetic testing by AncestryDNA, a confirmed that Harding was Blaesing's biological father.