Raoul identifies himself as Vicomte de Bragellone. This is accurate to the books, and this was also the title of the final book in the series. In its abridged form, it is usually known as The Man in the Iron Mask.
Philippe Noiret is the only French actor to play a major role in the film. Ironically, his character Cardinal Mazarin was Italian in spite of the fact that he served as France's Chief Minister from 1642 to 1661.