one vespers to another during certain Catholic festivals, and would contribute to the upkeep of the chapel. In 1513, Andrzej Krzycki wrote a poem mentioning numerous wax votive offerings on Casimir's grave. In 1514, during the Fifth Council of the Lateran, Casimir's brother Sigismund I the Old petitioned the pope to canonize Casimir. After repeated requests, in November 1517, Pope Leo X appointed a three-bishop commission and later sent his legate Zacharias Ferreri to investigate. He arrived at Vilnius in September 1520 and completed his work in about two months. His findings, the first short hagiography of Casimir, was published in 1521 in Kraków as Vita Beati Casimiri Confessoris. The canonization was all but certain but Pope Leo X died in December 1521. Research of Zenonas Ivinskis and Paulius Rabikauskas showed that there is no documentary proof that he issued a papal bull canonizing Casimir but many important documents were lost during the Sack of Rome (1527). The Protestant Reformation attacked the cult of saints and there were no new canonizations between 1523 and 1588. However, Casimir was included in the first Roman Martyrology, published in 1583. The cause of Casimir's cult was taken up by the new Bishop of Vilnius Benedykt Woyna (appointed in 1600). He sent canon Gregorius Swiecicki to Rome with a letter from King Sigismund III Vasa requesting to add the feast of Casimir to the Roman Breviary and Roman Missal. The Sacred Congregation of Rites refused the request but on 7 November 1602 Pope Clement VIII issued a papal brief Quae ad sanctorum which authorized his feast sub duplici ritu on 4 March but only in Poland and Lithuania. The brief also mentioned that Casimir was added to the ranks of saints by Pope Leo X. In the absence of any earlier known papal document explicitly mentioning Casimir as saint, the brief is often cited as Casimir's canonization. Swiecicki returned to Vilnius with the papal brief and red velvet labarum with the image of Saint Casimir. The city organized a large three-day festival on 10–12 May 1604 to properly accept the papal flag. On the third day, the cornerstone was laid for the new Church of St. Casimir. The coffin of Casimir was taken out of the crypt and elevated to the altar. Swiecicki testified that when the coffin was opened in August 1604 a wonderful smell filed the cathedral for three days. In 1607