Martyred for her attempt to convert the fourth-century pagan emperor Maximinus Daia, Saint Catherine of Alexandria is identified by her crown and regal attire. The panel belonged to an elaborate, two-tiered altarpiece. The figure combines the bulk and three-dimensionality of a work by Giotto or the sculptor Giovanni Pisano with the decorative brilliance for which Sienese painting is famous. The inscription at the top indicates that it was surmounted by a figure of Saint John the Evangelist. For more information about this painting, visit metmuseum.org.