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Events

King Rudolph I loses the support of Herbert II, count of Vermandois, who controls the prison at Péronne in which former King Charles III is imprisoned. Herbert brings him before William I, count of Rouen, for homage and then to Rheims as leverage to blackmail Rudolph to make him cede sovereignty over Laon.
June 5 - Louis III, former king of Provence, dies at Arles after a 27-year reign. He is succeeded by his brother-in-law Hugh I who is King of Italy. With the approval of his kinsman Rudolph I, Hugh strips Louis's son and heir, Charles Constantine, of his inheritance and proclaims himself as ruler of Provence.
Winter - King Henry I subdues the Polabian Slavs who live on the eastern borders. He then marches against the Slavic Hevelli tribes and seizes their capital, Brandenburg. Henry invades the Glomacze lands in the middle Elbe valley, where he besieges and destroys the main castle called Gana at Meissen.

King Hywel Dda of Deheubarth makes a pilgrimage to Rome, he becomes the first Welsh ruler to undertake such a trip. Hywel begins the codification of medieval Welsh law and mints his own coinage.

Summer - A Fatimid fleet under Sabir al-Fata raids Byzantine southern Italy. It captures a locality named in Apulia and sacks the cities of Taranto and Otranto. The inhabitants are carried off to North Africa as slaves.

Ishanavarman II dies after a 5-year reign and is succeeded by his uncle Jayavarman IV as king of the Khmer Empire. He moves the capital north from Angkor to Koh Ker.

Summer - Pope John X is deposed and imprisoned in Castel Sant'Angelo at Rome by order of the Roman senatrix Marozia after a 14-year reign. He is succeeded by Leo VI as the 123rd pope of the Catholic Church.
Leo VI abolishes the Nin Bishopric and transfers bishop Gregory to Skradin. This ends the long running dispute between the Split and Nin Bishoprics in the Croatian kingdom.
July 18 - Tryphon succeeds Stephen II as patriarch of Constantinople.