John McLiam on AllMovie

He was born John Williams, but there already was a John Williams in show business (several of them, in fact), so the Canadian-born actor selected John McLiam as his professional moniker. McLiam's man-on-the-street countenance could be molded into a vast array of characterizations, ranging from a cockney low-life (My Fair Lady) to a Southern redneck (Cool Hand Luke). The actor's bland normality was a key factor in his being cast as real-life murder victim Herbert Clutter in 1967's In Cold Blood. John McLiam accepted more TV guest-star assignments than can possibly be listed here; he was also a regular on the weekly series Men From Shiloh (1970) and Two Marriages (1983).