Molly Mayne

 also known as The New Girl and later dubbed Lorcan's Wife with the rank of Madame, Princess, and Queen throughout the movie, is the main protagonist of The Lorcan Darcy Story. She is a British lesbian who moves to the United States to start her new life. She becames Lorcan's girlfriend. It was revealed in the ending that Molly Mayne is a british girl version of both Cillian and Ellie Darcy.