Old Heidelberg

Wallace Reid

Prince Karl Heinrich

Dorothy Gish

Katie Ruder

Karl Formes

Dr. Juttner

Erich von Stroheim

Lutz

Raymond Wells

Karl Bilz

John McDermott

Von Wendell

James Gibson

Kellerman

Franklin Arbuckle

Fritz Ruder - Katie's Father

Madge Hunt

Frau Hans Ruder - Katie's Aunt

Erich von Ritzau

Prince Rudolf (as Erik von Ritzau)

Kate Toncray

Frau Fritz Ruder - Katie's Mother

Harold Goodwin

Prince Karl - Age 12

Francis Carpenter

Prince Karl - Age 5

Erich von Stroheim

Assistant Director

Joseph Carl Breil

Original Music Composer

D.W. Griffith

Supervising Producer

John Emerson

Director, Writer

Wilhelm Meyer-Förster

Novel