Genre painting, also called genre scene or petit genre, depicts aspects of everyday life by portraying ordinary people engaged in common activities. One common definition of a genre scene is that it shows figures to whom no identity can be attached either individually or collectively—thus distinguishing petit genre from history paintings (also called grand genre) and portraits. A work would often be considered as a genre work even if it could be shown that the artist had used a known person—a member of his family, say—as a model. In this case it would depend on whether the work was likely to have been intended by the artist to be perceived as a portrait—sometimes a subjective question. The depictions can be realistic, imagined, or romanticized by the artist. Because of their familiar and frequently sentimental subject matter, genre paintings have often proven popular with the bourgeoisie, or middle class. Genre themes appear in nearly all art traditions. Painted decorations in ancient Egyptian tombs often depict banquets, recreation, and agrarian scenes, and Peiraikos is mentioned by Pliny the Elder as a Hellenistic panel painter of "low" subjects, such as survive in mosaic versions and provincial wall-paintings at Pompeii: "barbers' shops, cobblers' stalls, asses, eatables and similar subjects". Medieval illuminated manuscripts often illustrated scenes of everyday peasant life, especially in the Labours of the Months in the calendar section of books of hours, most famously Les Tres Riches Heures du Duc de Berry.