Well. Yes. The demoness goes by the name Mazikeen, or Maze.
There's also my good friend, Crowley, but I don't really count him. It's unfortunate that he's included in the spell, but there's nothing to be done about that. He's brilliant, as far as demons go, and wily, so I wouldn't put it past him to figure out a way to get through irregardless.
Oh, and I was just told that there's somebody else, she has demon ancestors.