Identify the actors
According to IMDb, "Mary Gordon" was a pseudonym for Mariangela Giordano, who was not, as far as I'm aware, a c.s.c. actress, but being from IMDb this may or may not be correct. "Mary Gordon" does sound like a more likely name for Giordano than for any of our known c.s.c. actress, but does Giordano appear in the film? . It's like the one c.s.c. credit that Claudio Biava has, but there is no other evidence that he was a c.s.c. actor.
Here's Giordano, maybe aka Mary Gordon