Katie Cassidy was born Katherine Evelyn 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 1970's. She became a regular on Happy Days its first season . It was then, in 1970, during an audition, that Sherry first met and dated Katie's father, David. Sherry left her career to concentrate on raising her daughters, with husband, Richard Benedon M.D., Katie's step-dad ...[Read Story]