Though Lady Macbeth's nationality is never mentioned in the original play, it is presumed that she is Scottish. For the film, Marion Cotillard kept her French accent. Producer Iain Canning explained that her casting added another layer to the film. "It has allowed us, at the center of this story, to place a character who has an otherness, there's a slight sense of separation now, in Lady Macbeth, that she exists in the community but somehow has a slightly different agenda to the other women in that community. It adds complexity to the Lady Macbeth role", he said. Scotland had many French Consorts, so it would have been plausible for Lady Macbeth to be French.