Gwendolyn Koldofsky (née Williams; November 1, 1906 – November 12, 1998) was a Canadian piano accompanist and music educator who became renowned in her field, a Professor Emerita at USC . Born Gwendolyn Williams in Bowmanville, Ontario, she studied piano with noted Danish piano teacher in Toronto, with Tobias Matthay in London, as well as with Marguerite Hasselmans in Paris. She studied accompanying in London with Harold Craxton. In 1943, she married Adolph Koldofsky, a noted Canadian violinist born in London, England of Russian-Jewish parents. The pair lived in Toronto until 1944, moving to Vancouver and then to Los Angeles in 1945. Gwendolyn Koldofsky created the first Department of Accompaniment at the music school of the University of Southern California in 1947, where she taught chamb