Bilal M, Tubbs RS.Popes convict dead Pope Twice! The unbelievable Cadaver Synod.Clin Anat. 2016 Mar;29(2):140-3. doi: 10.1002/ca.22678.
In 897, the 9-month-old corpse of the late Pope Formosus stood trial by the reigning pontiff, Stephen VII. Stephen VII convicted Formosus, sentenced the cadaveric Pope to have three fingers of his right hand amputated and then had him buried in a common grave. This posthumous trial raised theological and sacramental debates and created an outrage in Rome that became the cause of Stephen VII's swift downfall. Pope Formosus joins other notable historical figures such as St. Thomas Becket and John Wycliffe who were tried and punished after death.