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Stephen VIII (or IX) (born, Rome—died October 942, Rome) was the pope from 939 to 942. Educated in Germany, he became cardinal priest of the Roman Church of SS. Silvester and Martin. He was elected pope on July 14, 939, to succeed Leo VII. Because Duke Alberic II of Spoleto, virtual dictator of Rome, dominated his pontificate, Stephen had little opportunity for independent action. His political efforts were directed toward supporting the last Carolingian, King Louis IV d’Outremer (from Overseas), Charles III the Simple’s son. He formally recognized Louis, threatening to excommunicate those who rebelled against him. He also supported the important Cluniac reform of monasticism in Europe under the influence of Abbot St. Odo of Cluny, whom Stephen requested to visit Rome in 942 to negotiate peace between the feuding Alberic and Hugh of Provence, king of Italy. Stephen later incurred the displeasure of Alberic II, who had him imprisoned. He died soon after.

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