Vatican I: The Council and the Making of the Ultramontane Church

In 1869, some seven hundred Catholic bishops traveled to Rome to participate in the first church-wide council in three hundred years. The French Revolution had shaken the foundations of the church. Pope Pius IX was determined to set things right through a declaration by the council that the pope was infallible.

John W. O’Malley brings to life the bitter, schism-threatening conflicts that erupted at Vatican I. The pope’s zeal in pressing for infallibility raised questions about the legitimacy...