From advertisements to amusement parks, themed restaurants, and Renaissance fairs twenty-first century popular culture is strewn with reimaginings of the Middle Ages. They are nowhere more prevalent, however, than in the films, television series, books, and video games of speculative genres: fantasy and science fiction. Peter Jackson's The Lord of the Rings and The Hobbit film trilogies and George R. R. Martin's multimedia Game of Thrones franchise...