Trivia

In the scene of "The Texas Chain Saw Massacre" when his character beat up Sally Hardesty (Marilyn Burns), he had to actually hit her because none of the fake things they tried looked real. It was done after 8 takes. After these takes Marilyn was bruised up and actually fainted.

Was actually 20 years older than the actor who portrayed his grandfather in Massacre à la tronçonneuse (1974).

Briefly ran his own carpet cleaning business in Texas.

Has two sons and one daughter.

Born Jim Nash Siedow, he was the son of Anna T. (Shepherd) and Herman William Siedow. His paternal grandparents were emigrants from Germany, his grandfather from West Preson, Heidelburg, and his grandmother from Pennogin, Berlin.