Stephen VI (or VII), (born, Rome—died July/August 897, Rome), pope from May 896 to August 897.

The era in which he was elected as the successor to Pope Boniface VI was torn by factions led by Roman aristocrats and by rulers of Naples, Benevento, Tuscany, and Spoleto (of whose ruling family Stephen was a member). Guy, duke of Spoleto, had been reluctantly crowned (891) Holy Roman emperor by Pope Stephen V (VI), and Guy’s son Lambert had been crowned co-emperor by Pope Formosus. Both of these preceding pontiffs had preferred the East Frankish king Arnulf, and in 896 Formosus abandoned the Spoletans and crowned Arnulf Holy Roman emperor, igniting a stormy conflict between the feuding factions. After Boniface’s two-week pontificate, Stephen, then bishop of Anagni, was elected pope, and the Spoletan party gained control of Rome.

Stephen was a partisan of Lambert, who induced him to conduct one of the grisliest events in papal history—the “Cadaver Synod” (or Synodus Horrenda). The Spoletans were so driven by hate for Formosus that they effected an unprecedented council (897) at which Formosus’ corpse was disinterred and arraigned for trial. Among the accusations against Formosus was that he had uncanonically transferred from the episcopal see of Porto to that of Rome (current church law forbade a bishop’s transferring from one see to another). The true purpose of the trial, however, was the appeasement and satisfaction of political enmity; the Spoletans charged that as leader of the rival faction Formosus had crowned an illegitimate descendant of Charlemagne after he had already crowned Lambert. Inevitably, Stephen’s party sought the destruction of the Formosan faction.

Stephen ordered the nine-month-old cadaver redressed in papal vestments and propped up in the papal throne. He then proceeded to annul Formosus’ pontificate and to declare his acts (including the holy orders he had conferred) void. Since Formosus had appointed Stephen bishop of Anagni, the annulment freed Stephen from charges of irregularity in his transferral from the see of Anagni to Rome.

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Stephen concluded the trial by ordering that the corpse be dragged through the streets and dumped into the Tiber River.

In a few months an insurrection removed Stephen from office. Deprived of papal insignia, he was imprisoned and strangled, but his party found another leader in the murderous pope Sergius III. Twelve years of blood, intrigue, and terror followed.