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864

{{short description|Calendar year}}

{{Use mdy dates|date=February 2011}}

{{About year|864}}

{{Year nav|864}}

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__NOTOC__

Year 864 (DCCCLXIV) was a leap year starting on Saturday of the Julian calendar.

Events

= By place =

== Europe ==

  • Spring – Emperor Louis II (the Younger) marches with a Frankish army against Rome. While en route to the papal city, he becomes ill, and decides to make peace with Pope Nicholas I.
  • July 25 – Edict of Pistres: King Charles the Bald orders defensive measures against the Vikings. He creates a large force of cavalry, which inspires the beginning of French chivalry.
  • Viking raiders, led by Olaf the White, arrive in Scotland from the Viking settlement of Dublin (Ireland). He rampages the country, until his defeat in battle by King Constantine I.
  • Robert the Strong, margrave of Neustria, attacks the Loire Vikings in a successful campaign. Other Viking raiders plunder the cities of Limoges and Clermont, in Aquitaine.
  • King Louis the German invades Moravia, crossing the Danube River to besiege the civitas Dowina (identified, although not unanimously, with Devín Castle in Slovakia).{{cite book |last1=Bowlus |first1=Charles R. |title=Franks, Moravians, and Magyars: The Struggle for the Middle Danube, 788-907 |date=1995 |publisher=University of Pennsylvania Press, Incorporated |isbn=978-0-8122-3276-9 |edition=Illustrated |url=https://books.google.com/books?id=VZhnAAAAMAAJ|page=140}}{{cite book |last1=Goldberg |first1=Eric Joseph |title=Struggle for Empire: Kingship and Conflict Under Louis the German, 817-876 |date=2006 |publisher=Cornell University Press |isbn=978-0-8014-3890-5 |edition=Illustrated, reprint |url=https://books.google.com/books?id=oyiTg0wgl58C |page=273}}
  • Pepin II joins the Vikings in an attack on Toulouse. He is captured while besieging the Frankish city. Pepin is deposed as king of Aquitaine, and imprisoned in Senlis.
  • September 13 – Pietro Tradonico dies after a 28-year reign. He is succeeded by Orso I Participazio, who becomes doge of Venice.
  • King Alfonso III conquers Porto from the Emirate of Cordoba. This is the end of the direct Muslim domination of the Douro region.{{cite book|last=Picard|first=Christophe|title=Le Portugal musulman (VIIIe-XIIIe siècle0. L'Occident d'al-Andalus sous domination islamique|year=2000|publisher=Maisonneuve & Larose|location=Paris|isbn=2-7068-1398-9|page=109}}

== Asia ==

  • Mount Fuji, located on Honshu Island, erupts for 10 days, in an event known as the Jōgan eruption (Japan).
  • Hasan ibn Zayd establishes the Zaydid Dynasty, and is recognized as ruler of Tabaristan (Northern Iran).{{cite journal |last1=Buhl |first1=Fr.|editor1-last=Bearman |editor1-first=P. |editor2-last=Bianquis |editor2-first=Th. |editor3-last=Bosworth |editor3-first=C. E. |editor4-last=van Donzel |editor4-first=E. |editor5-last=Heinrichs |editor5-first=W. P. |title=al-Ḥasan b. Zayd b. Muḥammad|journal=The Encyclopaedia of Islam|url=https://referenceworks.brillonline.com/entries/encyclopaedia-of-islam-2/al-hasan-b-zayd-b-muhammad-SIM_2758|edition=2nd|page=245|date=1986|publisher=Brill|url-access=subscription }}

= By topic =

== Religion ==

  • The Christianization of Bulgaria begins: Boris I, ruler (Knyaz) of the Bulgarian Empire, is converted to Orthodox Christianity. His family and high-ranking dignitaries accept the Orthodox faith at the capital, Pliska - from this point onwards the rulers of the Bulgarian Empire are known as ‘Tsars’ rather than ‘Khans’.{{cite web|url=http://promacedonia.org/vz1b/vz1b_3_2.html|title=V. Zlatarski - Istorija 1 B - 3.2|first=Vassil|last=Karloukovski|date=1927|website=Promacedonia.org|access-date=August 26, 2017}}

Births

Deaths

References

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