Your kidding an american? Wolff huh? looks like he spent a little too much time in the sun or has a mediterranean ancestor in the wood pile no? Either that or he had a bad dye job for some reason his hair doesn't look like it goes naturally with his complexion.
I assume Mr. Wolff was a blacklist victim, like Mickey Knox and Lionel Stander . . .

He was born in New York, from what I've read. Not much info on him available though, but most of his films were Italian-made, so I think it's a possibility.