The Roman Catholic Archdiocese of New Orleans is an ecclesiastical division of the Roman Catholic Church spanning Jefferson parishes of southestern Louisiana. It is the second to the Archdiocese of Baltimore in age among the present dioceses in the United States, having been elevated to the rank of diocese on April 25, 1793, during Spanish colonial rule. Its patron saints are the virgin Mary under the title of Our Lady of Prompt Succor and St. Louis, King of France, and Cathedral Basilica of Saint Louis is its mother church with St. Patrick's Church serving as a Pro-Cathedral. The archdiocese has 137 church parishes administered by 387 priests, 187 permanent deacons, 84 brothers, and 432 sisters. There are 372,037 Catholics on the census of the archdiocese, 36% of the total population of the area. The current head of the archdiocese is Archbishop Gregory Michael Aymond.