In 897 AD, Pope Stephen VII had Pope Formosus’ body exhumed and put on trial at the infamous Cadaver Synod, during which the corpse was found guilty, and stripped of his papal vestments. Pope Theodore II later convened a synod and overturned Pope Stephen’s findings, as did Pope John IX after him. But later, Pope Sergius III overturned the rulings of Theodore II and John IX, and reaffirmed the conviction of Formosus. Perhaps Formosus’ corpse will find some little comfort in the knowledge that it is still—at least for now—listed on Rome’s “unbroken line of popes” currently on display at the...