The painting of Saint Catherine of Alexandria, shown with the martyr’s palm and the spiked wheel she was tortured with, completes the series of paintings of holy martyrs executed by Giovan Battista Salvi, called il Sassoferrato, for the monastery of San Pietro. As well as this painting, those of Santa Giustina and Santa Apollonia, both in San Pietro, Sant’Agnese and Santa Barbara in the “Tesori d’Arte” gallery of the Fondazione per l’Istruzione Agraria are also part of the series.