View source for 780

{{Use mdy dates|date=February 2011}}
{{About year|780}}
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[[File:Asia Minor ca 780 AD.svg|upright=1.35|thumb|[[Byzantine Empire]] with the ''[[Theme (Byzantine district)|themata]]'' (c. 780)]]
[[File:Solidus_Irene_ConstantineVI.jpg|upright=1.35|thumb|Empress [[Irene of Athens|Irene]] and her son [[Constantine VI]]]]
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Year '''780''' ('''[[Roman numerals|DCCLXXX]]''') was a [[leap year starting on Saturday]] of the [[Julian calendar]], the 780th year of the [[Common Era]] (CE) and [[Anno Domini]] (AD) designations, the 780th year of the [[1st millennium]], the 80th year of the [[8th century]], and the 1st year of the [[780s]] decade. The denomination 780 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.

== Events ==
<onlyinclude>

=== By place ===

==== Byzantine Empire ====
* [[September 8]] - Emperor [[Leo IV the Khazar|Leo IV]] ("the Khazar") dies after a 5-year reign, in which he has been dominated by his wife [[Irene of Athens]], an [[iconodule]]. He is succeeded by his 9-year-old son [[Constantine VI]]; due to his minority, Irene and her chief minister [[Staurakios (eunuch)|Staurakios]] exercise a [[regency]] over him.<ref>Cutler & Hollingsworth (1991), pp. 501–502.</ref>

==== Europe ====
* [[Saxon Wars#First phase|Saxon Wars]]: King [[Charlemagne]] decrees the [[Capital punishment|death penalty]] for any subdued [[Saxons|Saxon]] refusing Christian [[baptism]]. Meanwhile [[Widukind]] builds up rebel strength in northern [[Old Saxony|Saxony]].{{sfn|Nicolle|2014|p=19}} 
* The city of [[Osnabrück]], developed as a [[Emporium (early medieval)|marketplace]], is founded by Charlemagne (approximate date).

==== Britain ====
* The city of [[Aldwych]] rises as an important trading centre in [[London]], under [[Mercia]]n control. King [[Offa of Mercia]] possibly establishes a royal palace at [[Bassishaw|Aldermanbury]], on the site of the old Roman [[Cripplegate|Cripplegate fort]] and [[amphitheatre]] (approximate date).

==== Asia ====
* King [[Hyegong of Silla]] is killed in a revolt, terminating the kingly line of succession of former ruler [[Muyeol of Silla|Muyeol]], the architect of [[Silla#Later Silla|Silla]]'s unification of the [[Three Kingdoms of Korea|Korean Peninsula]] (see [[668]]).

=== By topic ===

==== Religion ====
* [[Borobudur]], a Buddhist [[temple]] complex in [[Magelang Regency|Magelang]] (modern [[Indonesia]]), is begun (approximate date).
</onlyinclude>

== Births ==
* [[Ahmad ibn Hanbal]], Muslim [[Scholarly method|scholar]] and [[Theology|theologian]] (d. [[855]])
* [[Frederick of Utrecht]], Frisian [[bishop]] (approximate date)
* [[Guifeng Zongmi]], Chinese [[Chinese Buddhism|Buddhist]] monk (d. [[841]])
* [[Hugh of Tours]], Frankish [[Nobility|nobleman]] (approximate date)
* [[Muḥammad ibn Mūsā al-Ḵwārizmī]], Persian [[mathematician]] (approximate date)
* [[Rabanus Maurus]], archbishop of [[Elector of Mainz|Mainz]] (approximate date)
* [[Yunyan Tansheng]], Chinese Buddhist monk (d. 841)

== Deaths ==
* c. [[June 24]] &ndash; [[Kume no Wakame]], Japanese noblewoman
* [[August 19]] &ndash; [[Credan]], English abbot and saint
* [[September 8]] &ndash; [[Leo IV the Khazar|Leo IV]], Byzantine emperor (b. [[750]])
* [[Dunchadh ua Daimhine]], king of [[Uí Maine]] ([[Ireland]])
* [[Hyegong of Silla|Hyegong]], king of [[Silla]] ([[Korea]]) (b. [[758]])
* [[Khun Lo]], founder of [[Luang Prabang]] ([[Laos]])
* Approximate date &ndash; [[Himiltrude]], queen consort of [[Charlemagne]] (b. c.742)

== References ==
{{Reflist}}

=== Sources ===
{{refbegin}}
* {{cite book |last=Nicolle |first=David |author-link=David Nicolle |date=2014|title=The Conquest of Saxony AD 782–785 |publisher=Bloomsbury USA |isbn=978-1-78200-825-5}}
{{refend}}

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[[Category:780| ]]