are katherine hepburn and audrey hepburn related
Audrey Hepburn and Katherine Hepburn were not related. Audrey Hepburn's last name at birth was Ruston. Audrey Hepburn dropped her last name Ruston when she was going to school to become a ballerina.
They are not related. Katherine Hepburn was born in Hartford Conn. Audrey was born Edda van Heemstra Hepburn-Ruston in Belgium.