Thornton is not Jewish is he?
No, Italian. He shortened his last name probably for the same reason that many others of his generation did--to make himself sound more Americanized.
Right. I was thinking of how the Germans, Jewish, and Polish people changed the variation of their last names during that time. Ex Kryzewski to Kross, Brown from Von Bron ect...
Yeah, that's what I thought too.
Of course, Dangerfield is Jewish, and so is Keith Gordon. It's common in Hollywood for Jews to play Italians and vice versa.