Dicastery for the Causes of Saints
In the Catholic Church, the Dicastery for the Causes of Saints, previously named the Congregation for the Causes of Saints, is the dicastery of the Roman Curia that oversees the complex process that leads to the canonization of saints, passing through the steps of a declaration of "heroic virtues" and beatification. After preparing a case, including the approval of miracles, the case is presented to the pope, who decides whether or not to proceed with beatification or canonization.
Palazzo delle Congregazioni in Piazza Pio XII (in front of St. Peter's Square) is the workplace for most congregations of the Roman Curia
Dicastery for the Causes of Saints
Canonization is the declaration of a deceased person as an officially recognized saint, specifically, the official act of a Christian communion declaring a person worthy of public veneration and entering their name in the canon catalogue of saints, or authorized list of that communion's recognized saints.
Canonization of Elizabeth of Hungary in 1235. Sándor Liezen-Mayer (1863).
Pope Pius II canonizes Catherine of Siena.
The Turkish atrocities in Bulgaria (1876). On 3 April 2011, Batak massacre victims were canonized as saints.
On 4 November 1992, the Holy Synod of the Church of Greece unanimously declared saints those Christians who had been tortured and massacred by the Turks in the Great fire of Smyrna in 1922.