 The reproduction of the unpublished heraldic figure attributed to Antonio Grifo, illuminated in the incunabulum "Comedia" by Dante (Cremonese, Venice 1491), now at Casa di Dante in Rome, shows the original coat of arms and insignia of the family of Galeazzo Sanseverino, and the comparison with those illuminated by Birago is not corresponding.Developing this hypothesis, Carla Glori suggests that Caterina Sforza, the daughter of Galeazzo Maria and half-sister of Gian Galeazzo, was the owner of the Warsaw Sforziad and that she gave it to the family of her deceased half-brother between 1496-1499.Horodyski’s ideas have recently been revived by Katarzyna Krzyzagórska-Pisarek in her “"La Bella Principessa".