"The Book of Girard of Nevers and the Beautiful Eriant of His Friend" is a medieval novel written by the author Gerber Montreuil in the 13th century. In this work, the writer tells about the love and adventures of the two main characters - Girard of Neversky and the beautiful Eriant. Their relationship intersects with military confrontations, conspiracies and mysteries, which makes this novel fascinating for the reader. Gerbert de Montreuil successfully combines everything that is considered classic for romantic stories: friendship, love, unraveling mysterious secrets. His language is refined, and the descriptions of characters and events help the reader immerse himself in the atmosphere of medieval France. "The book of Girard of Neversky and the beautiful Eriant of His Friend" is not only a romantic story, but also a reflection of the life, customs and values of the medieval era, which are waiting for their readers to reveal their own secret to them."