Pope Formosus
Stephen of Anagni, a native of Rome and son of a Roman priest named Joannes, became Bishop of Anagni, and was consecrated by Pope Formosus (891–896). On the death of Formosus, and after the fifteen-day reign of Boniface VI (April 896), Stephen became Pope. He summoned and presided over the notorious "Cadaver synod", which put the dead body of Pope Formosus on trial, convicted him, and ordered his body thrown into the Tiber River. Pope Stephen ruled for one year, three months, and eighteen days, and was then deposed, imprisoned, and strangled.