Charlemagne, The Father of Europe, died in the year 814 and left only one surviving son to take the helm of the Carolingian Empire, which spanned the lion's share of the European continent. But his heir, Louis the Pious, had three sons, who each got a parcel of the empire when he died. Then those kings had children of their own, dividing the kingdom up until factions and branches of Charlemagne's lineage occupied independent power centers from the border of modern Denmark all the way down to Italy south of Rome.

Our story today involves several of those Carolingian kings, and two priests who would become popes. Bishop Formosus served the Vatican as a diplomat on numerous missions in Europe, developing close ties to the Frankish kings to the north of Rome, the sons of the sons of Charlemagne. When his winding road to the Papacy finally made him Pope Formosus, he found himself at odds - even militarily - with the southern wing of the family, the Dukes of Spoleto, the sons of the daughters of Charlemagne.

After Formosa's death, the Dukes of Spoleto reasserted their power, installing a new pope, Stephen VI, who exacted the southern family's revenge on Formosus and their northern kin by exhuming Formosus's rotten corpse and holding an infamously gruesome public trial. Formosus was obviously convicted, but the episode condemned Stephen VI in the moment and for the ages.

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