Jett Williams (born Antha Belle Jett; January 6, 1953) is an American singer and songwriter. Early life Born Antha Belle Jett, she is the daughter of country music icon Hank Williams and Bobbie Jett (1922–1974), whose brief relationship with Hank Williams occurred between his two marriages. She is a posthumous child; her birth on January 6, 1953, in Montgomery, Alabama, occurred five days after her father's death on January 1. In December 1954, she was legally adopted by her paternal grandmother, Lillie Williams Stone, who renamed her Catherine Yvonne Stone. Following her grandmother's death in 1955, Stone was made a ward of the state of Alabama and subsequently adopted by parents who renamed her Cathy Louise Deupree. Court fight Deupree knew she was adopted, but did not learn of her biological parents until the early 1980s. Although Hank Williams had executed a custody agreement three months before her birth that gave him custody of his unborn daughter, she was forced to go to extreme lengths to prove the relationship and be recognized as Williams' daughter. In September 1984, she met and retained Washington, D.C. investigative attorney Keith Adkinson to help her. Within days, he obtained a copy of the custody contract, and within months had conclusive proof Deupree was defrauded for the financial gain of others. A lawsuit was filed based on this discovery. On September 28, 1986, Deupree and Adkinson married in Washington. He died on June 19, 2013. In 2016, Jett married Kelly Zumwalt. In 1985, the Alabama State Court ruled she was the daughter of Hank Williams. On October 26, 1987, the Alabama Supreme Court ruled she was entitled to her half-share in the Williams estate, as she had been the victim of fraud and judicial error. Hank Williams Jr. appealed the case in federal court, but the ruling stood when the United States Supreme Court refused to hear the case in 1990. Book and honors In 1990, she published her autobiography Ain't Nothin' as Sweet as My Baby. In 2000, the Tennessee legislature passed HJR 621 designating May 18, 2000, as "Jett Williams Appreciation Day" in Macon County. Sole rights In January 2006, the Tennessee Court of Appeals upheld a lower court ruling stating Hank Williams' heirs — son Randall Hank Williams (Hank Williams Jr.) and daughter Jett Williams, Hank Jr.'s half-sister — have the sole rights to sell his old recordings made for a Nashville