Pope Pius IX
May 13, 1792 – February 7, 1878
Pope from 1846 to 1878, the longest pontificate in history, who lost the Papal States to Italy and called the First Vatican Council, which defined papal infallibility.
May 13, 1792 – February 7, 1878
Pope from 1846 to 1878, the longest pontificate in history, who lost the Papal States to Italy and called the First Vatican Council, which defined papal infallibility.
