841

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Calendar year

title: "841" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["841"] description: "Calendar year" topic_path: "general/841" source: "https://en.wikipedia.org/wiki/841" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Calendar year ::

::callout[type=note] 841 ::

::figure[src="https://upload.wikimedia.org/wikipedia/commons/7/78/Fontenoy_en_puisaye.JPG" caption="Battle of Fontenay]] (841)"] ::

NOTOC Year 841 (DCCCXLI) was a common year starting on Saturday of the Julian calendar.

June 25 – Battle of Fontenay: Frankish forces of Emperor Lothair I, and his nephew Pepin II of Aquitaine, are defeated by allied forces of King Louis the German, and his half-brother Charles the Bald, at Fontenoy (Eastern France), in a civil war among the three surviving sons of the former emperor Louis the Pious. A total of 40,000 men are killed, including the Frankish nobles Gerard of Auvergne and Ricwin of Nantes, fighting on the side of Charles.
Summer – Vikings sail up the River Seine and devastate the city of Rouen in Normandy. They burn the Benedictine monastery of Jumièges Abbey; 68 captives are taken, and returned on payment of a ransom, by the monks of St. Denis.

The town of Dyflin (meaning "Black Pool") or Dublin (modern Ireland) is founded by Norwegian Vikings, on the south bank of the River Liffey. The settlement is fortified with a ditch and an earth rampart, with a wooden palisade on top. The Norsemen establish a wool weaving industry, and there is also a slave trade. An artificial hill is erected, where the nobility meets to make laws and discuss policy.

Constantine Kontomytes, Byzantine general (strategos) of the Thracesian Theme, inflicts a severe defeat on the Cretan Saracens. He leads a Byzantine expeditionary force, to raid the monastic community near Mount Latros (modern Turkey).
Venice sends a fleet of 60 galleys (each carrying 200 men) to assist the Byzantines in driving the Arabs from Crotone, but the attack fails. Muslim troops conquer the city of Brindisi (approximate date).

A pro-Umayyad rebellion, led by al-Mubarqa in Palestine, breaks out against caliph al-Mu'tasim of the Abbasid Caliphate (ending in 842).

In the Chinese capital of Chang'an, the West Market (and East Market) are closed every night one hour and three quarters before dusk (by government order); the curfew is signaled by the sound of 300 beats to a loud gong. After the official markets have been closed for the night, small night markets in residential areas thrive with plenty of customers, despite government efforts to shut them down. With the decline of the government's authority (by mid 9th century), this edict (like many others) is largely ignored, as urban dwellers keep attending the night markets regardless.
December 17 – Comet X/841 Y1 is first sighted in Chang'an by the Japanese monk Ennin.

FAULTSORT:841}}

Eric Joseph, ''Struggle for Empire'', p. 103. Cornell University, 2006. {{ISBN. 0-8014-3890-X. Joseph states this number, given by [[Agnellus, Bishop of Ravenna. Agnellus]] of Ravenna, is probably exaggerated.
Recorded in the [[Abbey of Saint Wandrille. Chronicle of Fontenelle Abbey]].
{{harvnb. Treadgold. 1988
J. Norwich, ''A History of Venice'', p. 32.
"Al-Muʿtaṣim {{!}} ʿAbbāsid caliph".
(2022). "Comets and Political Anxieties in the First Half of the Ninth Century: New Light on Comets X/839 B1 and X/841 Y1". [[Journal of Astronomical History and Heritage]].

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