A bit of Harry Potter fanfiction in really bad French. I needed this story -- can't remember why I needed it -- but I did, so I wrote it myself. The book is mentioned briefly in Quidditch Through the Ages.
Basically it's a comedy about two young men, Évariste and Denis, and their attempts to woo the beautiful Gaëlle, a non-magical peasant girl. An English version of the story can be read right here.