Tuscany; Siena; Metropolitain Cathedral of Saint Mary of the Assumption; left way of main nave; Libreria Piccolomini: frescoe "Pius II canonizes Saint Catherine of Siena in 1461"; realized 1502 - 1507 by Pinturicchio (c. 1452 - 1513) and assistants; The Italian title of the frescoe is "Pio II canonizza santa Caterina da Siena"; in 1461. The Piccolomini Library was decorated by Pinturicchio and assistants Amico Aspertini (c. 1474 - 1552) and (partly) Raphael (Raffaelo Sanzio da Urbino; 1483 - 1520); wo was in Siena; 1502 - 1503. The decoration was ordered by Francesco Piccolomini Todeschini (1439 - 1503); Pope Pius III from 22nd of September 1503; to 18th of October 1503; to honor his uncle Enea Silvio Piccolomini (1405 - 1464; Pope Pius II from 1458 - 1464).