 Sheryl Lee (qv) plays two characters: Laura Palmer and her cousin,  a blonde and a brunette. In _Vertigo (1958)_ (qv)Kim Novak (qv)  plays two characters, a blonde and a brunette. One character is  called Madeleine, and James Stewart (I) (qv)s character is called  John Ferguson. The name of Laura Palmers cousin is an amalgamation  of these two names: Madeleine Ferguson.