Albert Pigius Avignon Avignon captivity Bp. Athanasius Schneider Cajetan Catholic Faith Controversies of the Christian Faith Dr. Taylor Marshall John of Turrecremata Peter Kwasniewski Pope Rome Ryan Grant St. Catherine Siena St. Robert Bellarmine St. Vincent Ferrer Taylor Marshall The last argument is refuted and the question is treated: Whether a heretical Pope can be deposed Urban VI authority of the Pope can a heretic be pope council gates of hell heresy losing the office of the papacy manifest heretic member of the Church occult heretic once the pope always the pope papacy papal office practice the Catholic Faith secret heretic theologians third general controversy