SM2---Yes, Marion is the second in 80 years. Sophia was the first. Roberto Benini is the only Best Actor winner from a foreign language film, but "technically" there is a fourth foreign language performance that has won, even if it's not from a foreign language film: Robert De Niro in "The Godfather Part II" for Best Supporting Actor. His entire performance was in Italian.
Some people go as far as to include Marlee Matlin who "signed" her Oscar-winning performance from Children of a Lesser God. I put that in a category all by itself, because it wasn't a foreign language. It was sign language, and she was signing in English.
"Jaws is the Citizen Kane of movies."
blocked: logan2, Diamonds3, Hamilton22