Kathryne Ann 'Taddy' Keller was born on 6 February 1909 in Chicago, Illinois, USA. She was married to Jack Pettis. She died on 2 July 1962 in Oklahoma City, Oklahoma, USA.
Born Catherine Lynch, she followed her older sister into vaudeville under the name of "Keller" because, so the story goes, that she was too young to legally perform; from somewhere they got the birth certificate of one Ethel Keller, who was of legal age, and the problem was solved.