Saint Eusebius was a noble Hungarian who lived in the 13th century. He became a hermit and soon acquired the fame of saint. He founded the Order of Saint Paul the First Hermit with the permission of Pope Urban IV. Here he is represented holding a book, his body almost pyramidal, his face tired and expressing kindness, in what is certainly a personal interpretation of this figure. As for many other figures shown here, plant motifs can be seen decorating the tondo in which he appears.