Санти-Куаттро-Коронати
On February 15, 1980, Mahony was appointed Bishop of Stockton by Pope John Paul II, as announced by the nuncio, Jean Jadot. Mahony terminated two extern priests for sexual abuse during his tenure at Stockton. On July 16, 1985, Mahony was promoted to Archbishop of Los Angeles, the first native Angeleno to hold the office. Mahony was created Cardinal-Priest of Santi Quattro Coronati by Pope John Paul II in the consistory of June 28, 1991.