Wilma Jeanne Cooper (born October 25, 1928 in Taft, California), known as Jeanne Cooper, is an American actress best known for her portrayal of Katherine Chancellor on the daytime soap opera The Young and the Restless. Although she was not in the series when the show debuted in March 1973, she made her onscreen debut in November of that year, and remains the longest-tenured actor on The Young and the Restless. She is the mother of Corbin Bernsen.
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