The Piccolomini Library, south west wall: “ Pius II canonizes St. Catherine of Siena, June 29, 1461”, the ninth one of the ten stories about Aeneas Sylvius Piccolomini, future Pope Pius II, (1503 - 1508), fresco by Bernardino di Betto, known as Pinturicchio. Detail of cardinals assisting at the ceremony of canonisation.