Katie Cassidy was born Katherine Evelyn Anita Cassidy on November 25, 1986, in Los Angeles, California. Her father, David Cassidy, was a pop star in the 1970s. Her mother, Sherry Williams, was a high fashion model in the early 1970s. Sherry left her career to concentrate on raising her 3 daughters, with husband, Richard Benedon M.D., Katie's ...