Besides a few Italian examples, the Museu Nacional also features an important selection of Italian, Catalan and Aragonese painting, such as the Triptych of Sant Vicenç d'Estopanyà, probably by an immigrant Italian artist, and altarpieces by the Serra brothers (the Serra family were highly influential in steering the course of Catalan painting during the closing decades of the 14th century). Sculpture during this period from the mid-14th century, was also influenced by Italian models, although the French Gothic style continued to exercise its authority. The collection includes works that may be attributed to some of the most outstanding sculptors of the time, such as Jaume Cascalls (see Head of Christ) and Bartomeu de Robió. Catalan sculpture in the late 14th century and the first half of the 15th is represented by two misericords from Barcelona Cathedral carved stalls by Pere Sanglada. From the 15th century, working in the new International Gothic style, Pere Oller and Pere Joan perhaps represent the peak of what was without doubt an important Catalan contribution to sculptural art.