Example image of eyePlorer eyePlorer map for 'Cadaver Synod': 897 Basilica of St. John Lateran Latin Pope Formosus Pope Stephen VI Middle Ages Pope Pope Nicholas I Roman Catholic Suburbicarian Diocese of Porto-Santa Rufina Episcopal see Second Council of Nicaea Charles the Bald Pope John VIII Auxilius of Naples 891 October 6 Liutprand of Cremona Guy III of Spoleto Holy Roman Empire Lambert II of Spoleto Arnulf of Carinthia Pope Boniface VI Ageltrude John IX Benevento Guy IV of Spoleto Benediction Roman Catholic Diocese of Anagni-Alatri Tiber Miracle Strangling Pontifical vestments Pope Theodore II St. Peter's Basilica Pope Sergius III Robert Browning The Ring and the Book The Bad Popes Pope Benedict IV Posthumous execution Burial Papal infallibility Timeline of Christianity