Katie Cassidy: Katie Cassidy. Actress: A Nightmare on Elm Street. 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 famous relatives include uncles Shaun Cassidy, Patrick Cassidy and Ryan Cassidy, the sons by her grandfather Jack Cassidy's marriage to Shirley Jones; Katie's grandmother was Evelyn Ward. As a child, Katie took gymnastics, studied...
