Editing 823

{{short description|Calendar year}}
{{Use mdy dates|date=February 2011}}
{{About year|823}}
{{Year nav|823}}
{{M1 year in topic}}
[[File:MadridSkylitzesFol37rDetail.jpg|upright=1.35|thumb|[[Thomas the Slav]] surrenders to [[Michael II]]]] 
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Year '''823''' ('''[[Roman numerals|DCCCXXIII]]''') was a [[common year starting on Thursday]] of the [[Julian calendar]].

== Events ==
<onlyinclude>

=== By place ===

==== Byzantine Empire ====
* Emperor [[Michael II]] defeats the rebel forces under [[Thomas the Slav]] in [[Thrace]]. He and his supporters are forced to seek refuge in [[Lüleburgaz|Arkadiopolis]] (modern [[Turkey]]). After five months of [[blockade]], Thomas surrenders and is delivered to Michael, seated on a [[donkey]] and bound in chains. He pleads for clemency and [[Prostration|prostrates]] before Michael, but is executed.<ref>{{cite book|last=Bury|first=John Bagnell|authorlink=J.B. Bury|title=A History of the Eastern Roman Empire from the Fall of Irene to the Accession of Basil I (A.D. 802–867)|location=London |publisher=Macmillan and Company|year=1912|url=https://archive.org/details/ahistoryeastern00burygoog|oclc=458995052|pages=105–106}}</ref><ref>{{The Byzantine Revival, 780–842| pages=241–242}}</ref>

==== Europe ====
* [[April 5]] &ndash; [[Lothair I]], eldest son of Emperor [[Louis the Pious|Louis I]], is crowned co-emperor again by [[Pope Paschal I]] at [[Rome]] (initiating the [[Pope|papal]] practice of handing the imperial sword over, as a symbol of temporal power in the [[Holy Roman Empire]]).

==== Britain ====
* King [[Ceolwulf I of Mercia]] is deposed by [[Beornwulf of Mercia|Beornwulf]], who takes the [[throne]] of [[Mercia]]. During his rule he rebuilds the [[Gloucester Cathedral|Abbey of St. Peter]], and presides over two [[synod]]s at [[Council of Clovesho|Clofesho]].

==== Japan ====
* [[May 30]] &ndash; [[Emperor Saga]] abdicates the throne, after a 10-year reign. He is succeeded by his brother [[Emperor Junna|Junna]], as the 53rd [[emperor of Japan]].
</onlyinclude>

== Births ==
* [[June 13]] &ndash; [[Charles the Bald]], king of the [[Francia|Franks]] (d. [[877]])<ref>{{cite web |title=Charles II {{!}} Holy Roman emperor |url=https://www.britannica.com/biography/Charles-II-Holy-Roman-emperor |website=Encyclopedia Britannica |access-date=27 November 2020 |language=en}}</ref>
* [[Ermentrude of Orléans]], queen of the [[Francia|Franks]] (d. [[869]])
* [[Muhammad I of Córdoba|Muhammad I]], Muslim [[emir]] of [[Caliphate of Córdoba|Córdoba]] (d. [[886]])
* [[Pepin II of Aquitaine|Pepin II]] ('''the Younger'''), king of [[Duchy of Aquitaine|Aquitaine]]

== Deaths ==
* [[Adelochus]], archbishop of [[Roman Catholic Archdiocese of Strasbourg|Strasbourg]] (b. [[786]])
* [[Boniface I, Margrave of Tuscany|Boniface I]], margrave of [[Tuscany]]
* [[Ceolwulf I of Mercia|Ceolwulf I]], king of [[Mercia]] (approximate date)
* [[Gondulphus of Metz|Gondulphus]], bishop of [[Roman Catholic Diocese of Metz|Metz]]
* [[Han Hong (general)|Han Hong]], general of the [[Tang dynasty|Tang Dynasty]] b. [[765]])
* [[Ljudevit (Lower Pannonia)|Ljudevit]], duke of the [[Slavs in Lower Pannonia]]
* [[Thekla, wife of Michael II|Thekla]], Byzantine empress (approximate date)
* [[Thomas the Slav]], Byzantine general and [[usurper]]
* [[Timothy I (Nestorian Patriarch)|Timothy I]], Syrian [[patriarch]]
* [[Wulfheard]], bishop of [[Diocese of Hereford|Hereford]] (approximate date)

== References ==
{{Reflist}}

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