Portal:Catholic Church/Selected anniversaries/May 15

May 15

 * 913 - Death of Hatto I, Archbishop of Mainz.
 * 1252 - Pope Innocent IV issues the papal bull ad exstirpanda, which authorizes the torture of heretics in the Medieval Inquisition.
 * 1608 - Birth of René Goupil.
 * 1699 - Death of Edward Petre.
 * 1773 - Death of Alban Butler.
 * 1891 - Rerum Novarum, the first document of the Catholic Social Teaching tradition is published by Pope Leo XIII.