Pope Leo XII Publishes Quo Graviora

Date: March 13, 1825 • Location: Rome, Italy

Pope Leo XII publishes the apostolic constitution Quo Graviora in which he renewed the prohibition on Catholics joining freemasonry.

Pope Leo XII was head of the Catholic Church and leader of the Papal States from 28 September 1823 to his death in February 1829.

This milestone marked a defining occurrence in Italy's and world history, leaving an indelible imprint on societal development, international relations, and cultural memory. Its enduring ramifications continue to be examined and commemorated by historians and scholars across the globe.