778

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Calendar year

title: "778" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["778"] description: "Calendar year" topic_path: "general/778" source: "https://en.wikipedia.org/wiki/778" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Calendar year ::

::callout[type=note] 778 ::

::figure[src="https://upload.wikimedia.org/wikipedia/commons/1/18/Mort_de_Roland.jpg" caption="Battle of Roncevaux]])"] ::

::figure[src="https://upload.wikimedia.org/wikipedia/commons/1/11/Olifant,_Aachener_Domschatz.jpg" caption="Aachen Cathedral]])"] ::

NOTOC Year 778 (DCCLXXVIII) was a common year starting on Thursday of the Julian calendar, the 778th year of the Common Era (CE) and Anno Domini (AD) designations, the 778th year of the 1st millennium, the 78th year of the 8th century, and the 9th year of the 770s decade. The denomination 778 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Arab–Byzantine War: Emperor Leo IV ("the Khazar") repulses an Abbasid invasion in Anatolia. A Byzantine expeditionary force under Michael Lachanodrakon, military governor (strategos) of the Thracesian Theme, defeats the Muslim-Arabs at the fortress city of Germanikeia in Cilicia (modern Turkey). He plunders the region and takes many captives, mostly Jacobites, who are resettled in Thrace. ::figure[src="https://upload.wikimedia.org/wikipedia/commons/c/cb/Dirhem_of_al-Mahdi,_AH_158-169.jpg" caption="Silver [[dirham]] of Arab caliph [[al-Mahdi]], minted at [[Baghdad]] in 778/9"] ::

A Frankish army (supported by Burgundians, Bavarians, Bretons, Lombards, and Visigoths) under King Charlemagne invades Al-Andalus (modern Spain), and conquers the cities of Pamplona and Barcelona. However, the Franks are halted at Zaragoza, in the thughur or frontier zone of the Emirate of Córdoba.
August 15 – Battle of Roncevaux Pass (Pyrenees): Charlemagne is defeated by the Basques. Among those killed is Roland, governor of the Breton March, who will be immortalized in the 11th century epic The Song of Roland. This marks the beginning of medieval French literature.
Saxon Wars: Widukind and his close followers return to Saxony from Denmark. He probably makes alliances with the Danes and the northwestern Slav tribes. Saxon rebels destroy the fortress of Karlsburg and sack Deutz (near Cologne), but are unable to cross the Rhine. They are driven back by the garrison of Koblenz, but then ambush and defeat the Frankish pursuers. Counter-attacking Frankish forces pursue the Saxons up the Lahn Valley, and defeat them near Leisa.

Unrest in Northumbria leads to King Æthelred I ordering the execution of three of his dukes. This considerably weakens his position (approximate date).

Saxon raiders destroy many churches deep in Frankish territory. The Benedictine monks of Fulda Abbey (modern-day Hesse) hurriedly carry the relics of Saint Boniface over the Rhön Mountains to safety.
In Japan, the Kiyomizu-dera Buddhist temple is founded in Kyoto. Its main hall (Hondo) is built in 1633 without a single nail.

David Nicolle (2014). ''The Conquest of Saxony AD 782–785''. p. 12. {{ISBN. 978-1-78200-825-5
David Nicolle (2014). The Conquest of Saxony AD 782–785, p. 17. {{ISBN. 978-1-78200-825-5

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