Adding us as a Preferred Source tells Google you trust our content, so our articles show up more often in your Google Search, Discover feed, and AI Overviews.
verifiedCite
While every effort has been made to follow citation style rules, there may be some discrepancies.
Please refer to the appropriate style manual or other sources if you have any questions.
Select Citation Style
John IX
pope
John IX (born, Rome [Italy]—died January 900) was the pope from 898 to 900.
Consecrated in January 898, John was opposed by the rival candidate Sergius (later Pope Sergius III), whom he excommunicated. John immediately held councils at Rome and Ravenna to rehabilitate Pope Formosus, whose corpse had been exhumed (897) by Pope Stephen VI (VII) for a posthumous trial that declared his election as pope invalid. John’s councils condemned Stephen’s synod and destroyed its acts, restored the clergy deposed by Stephen and his faction, and confirmed the Constitutio Romana of the Frankish emperor Lothar I, thereby making compulsory the presence of an imperial emissary at papal consecrations.
This article was most recently revised and updated by Encyclopaedia Britannica.
Discover the fascinating events that shaped the world, straight from our editors.
By clicking “Sign Up”, you consent to the Britannica
Privacy Policy
and
Terms of Use.