Pandolfo Petrucci, the ruler of Siena. He was buried in the chapel of San Andrea in Saint Peter's Basilica, next to his uncle Pius II, his brothers Giacomo and Andrea serving as his executors. He had already chosen his burial place when he wrote his Will of 1493. When the basilica was being rebuilt, the monument was transferred below to the grottoes and the remains of Pius III and his uncle to the church of San Andrea della Valle in Rome put in a mausoleum created by Cardinal Alessandro Damasceni Peretti in 1614. See also Cardinal protector of England Notes and references Bibliography Piccolomini, Paolo (1903). "Il Pontificato di Pio III secondo le testimonianze di una fonte contemporanea," in: Archivio Storico Italiano, 5 serie, XXXII (1903), pp. 102–138. Richardson, Carol (1998). "The Lost Will and Testament of Cardinal Francesco Todeschini Piccolomini (1439-1503)," Papers of the British School at Rome Vol. 66 (1998), pp. 193–214. Richardson, Carol (2003). "The housing opportunities of a Renaissance cardinal." Renaissance Studies Vol. 17, No. 4 (2003), pp. 607–627. Strnad, A.A. (1966). "Francesco Todeschini-Piccolomini. Politik und Mäzenatentum im Quattrocento," in: Römische Historische Mitteilungen VIII-IX (1964-1966), pp. 101–425. (in German) The Encyclopædia Britannica, Vol.19, Ed. Thomas Spencer Baynes, Henry G. Allen Company, 1890. Ugurgieri della Berardenga, C. (1973). Pio II Piccolomini con notizie su P. III e altri membri della famiglia. Firenze 1973, pp. 504–523. Williams, George L., Papal Genealogy: The Families And Descendants of the Popes, McFarland & Company Inc., 1998. Further reading Wilkie, William E. 1974. The cardinal protectors of England. Cambridge University Press. . Wilkie, W.E. (1996). The Beginnings of Cardinal Protectorship of England: Francesco Todeschini Piccolomini, 1492-1503. Fribourg 1996. External links Loughlin, James. "Pope Pius III." The Catholic Encyclopedia. Vol. 12. New York: Robert Appleton Company, 1911. Retrieved: 30 January 2020. Cardinals of the Holy Roman Church: Frida De Salve, "The Piccolomini Library" Sanfilippo, Matteo (2015). "Pio III, papa." Dizionario Biografico degli Italiani Volume 83 (Treccani 2015) Popes Italian popes University of Perugia alumni 15th-century Italian Roman Catholic archbishops Cardinal-nephews House of Piccolomini Archbishops of Siena 1439 births 1503 deaths Burials at Sant'Andrea della Valle Renaissance Papacy 16th-century popes