Dr. Peter Kwasniewski offers a concise and highly readable catalogue of Popes who historically failed in their respective duties as the Vicar of Christ on earth.
Required reading for any Catholic with a faulty notion of magisterial authority, convinced that the pope (or other members of the hierarchy) can only hold and teach truth. History proves otherwise.
Article: Lessons from Church History; A Brief Review of Papal Lapses
Find It Here: