__NOTOC__ Year 823 ( DCCCXXIII) was a

common year starting on Thursday A common year starting on Thursday is any non-leap year (i.e. a year with 365 days) that begins on Thursday, 1 January, and ends on Thursday, 31 December. Its dominical letter hence is D. The most recent year of such kind was 2015, and the next ...

of the

Julian calendar The Julian calendar is a solar calendar of 365 days in every year with an additional leap day every fourth year (without exception). The Julian calendar is still used as a religious calendar in parts of the Eastern Orthodox Church and in parts ...

Events

By place

Byzantine Empire

* Emperor

Michael II Michael II (, ; 770 – 2 October 829), called the Amorian (, ) and the Stammerer (, or , ), reigned as Byzantine emperor from 25 December 820 to his death on 2 October 829, the first ruler of the Amorian dynasty. Born in Amorium, Michael was ...

defeats the rebel forces under

Thomas the Slav Thomas the Slav (, – October 823) was a 9th-century Byzantine military commander, most notable for leading a wide-scale revolt in 821–23 against Emperor Michael II the Amorian (). An army officer of Slavic origin from the Pontus reg ...

Thrace Thrace (, ; ; ; ) is a geographical and historical region in Southeast Europe roughly corresponding to the province of Thrace in the Roman Empire. Bounded by the Balkan Mountains to the north, the Aegean Sea to the south, and the Black Se ...

. He and his supporters are forced to seek refuge in Arkadiopolis (modern

Turkey Turkey, officially the Republic of Türkiye, is a country mainly located in Anatolia in West Asia, with a relatively small part called East Thrace in Southeast Europe. It borders the Black Sea to the north; Georgia (country), Georgia, Armen ...

). After five months of

blockade A blockade is the act of actively preventing a country or region from receiving or sending out food, supplies, weapons, or communications, and sometimes people, by military force. A blockade differs from an embargo or sanction, which are ...

, Thomas surrenders and is delivered to Michael, seated on a

donkey The donkey or ass is a domesticated equine. It derives from the African wild ass, ''Equus africanus'', and may be classified either as a subspecies thereof, ''Equus africanus asinus'', or as a separate species, ''Equus asinus''. It was domes ...

and bound in chains. He pleads for clemency and prostrates before Michael, but is executed.

Europe

April 5 Events Pre-1600 * 823 – Lothair I is crowned King of Italy by Pope Paschal I. * 919 – The Fatimid invasion of Egypt (919–921), second Fatimid invasion of Medieval Egypt, Egypt begins, when the Fatimid heir-apparent, Al-Qa'im (Fa ...

–

Lothair I Lothair I (9th. C. Frankish: ''Ludher'' and Medieval Latin: ''Lodharius''; Dutch and Medieval Latin: ''Lotharius''; German: ''Lothar''; French: ''Lothaire''; Italian: ''Lotario''; 795 – 29 September 855) was a 9th-century emperor of the ...

, eldest son of Emperor

Louis I Louis I may refer to: Cardinals * Louis I, Cardinal of Guise (1527–1578) Counts * Ludwig I, Count of Württemberg (c. 1098–1158) * Louis I of Blois (1172–1205) * Louis I of Flanders (1304–1346) * Louis I of Châtillon (died 13 ...

, is crowned co-emperor again by

Pope Paschal I Pope Paschal I (; died 824) was the bishop of Rome and ruler of the Papal States from 25 January 817 to his death in 824. Paschal was a member of an aristocratic Roman family. Before his election to the papacy, he was abbot of St. Stephen's monas ...

Rome Rome (Italian language, Italian and , ) is the capital city and most populated (municipality) of Italy. It is also the administrative centre of the Lazio Regions of Italy, region and of the Metropolitan City of Rome. A special named with 2, ...

(initiating the

papal The pope is the bishop of Rome and the visible head of the worldwide Catholic Church. He is also known as the supreme pontiff, Roman pontiff, or sovereign pontiff. From the 8th century until 1870, the pope was the sovereign or head of sta ...

practice of handing the imperial sword over, as a symbol of temporal power in the

Holy Roman Empire The Holy Roman Empire, also known as the Holy Roman Empire of the German Nation after 1512, was a polity in Central and Western Europe, usually headed by the Holy Roman Emperor. It developed in the Early Middle Ages, and lasted for a millennium ...

Britain

* King

Ceolwulf I of Mercia Ceolwulf I was the King of Mercia, a kingdom of Anglo-Saxon England, from 821 until his deposition in 823. He was the brother of Coenwulf, his predecessor, and was deposed by Beornwulf. William of Malmesbury declared that, after Cœnwulf: "t ...

is deposed by Beornwulf, who takes the

throne A throne is the seat of state of a potentate or dignitary, especially the seat occupied by a sovereign (or viceroy A viceroy () is an official who reigns over a polity in the name of and as the representative of the monarch of the territory ...

Mercia Mercia (, was one of the principal kingdoms founded at the end of Sub-Roman Britain; the area was settled by Anglo-Saxons in an era called the Heptarchy. It was centred on the River Trent and its tributaries, in a region now known as the Midlan ...

. During his rule he rebuilds the Abbey of St. Peter, and presides over two

synod A synod () is a council of a Christian denomination, usually convened to decide an issue of doctrine, administration or application. The word '' synod'' comes from the Ancient Greek () ; the term is analogous with the Latin word . Originally, ...

s at Clofesho.

Japan

May 30 Events Pre-1600 * 70 – Siege of Jerusalem: Titus and his Roman legions breach the Second Wall of Jerusalem. Jewish defenders retreat to the First Wall. The Romans build a circumvallation, cutting down all trees within . * 1381 – ...

–

Emperor Saga was the 52nd emperor of Japan, Emperor Saga, Saganoyamanoe Imperial Mausoleum, Imperial Household Agency according to the traditional order of succession. Saga's reign lasted from 809 to 823. Traditional narrative Saga was the second son of ...

abdicates the throne, after a 10-year reign. He is succeeded by his brother

Junna Junna Sakai (境純菜 ''Sakai Junna,'' born November 2, 2000), better known by her stage name JUNNA (じゅんな), is a Japanese singer managed by Cube Inc. and signed to FlyingDog. Career JUNNA made her singing career debut as the singing ...

, as the 53rd

emperor of Japan The emperor of Japan is the hereditary monarch and head of state of Japan. The emperor is defined by the Constitution of Japan as the symbol of the Japanese state and the unity of the Japanese people, his position deriving from "the will of ...

Births

June 13 Events Pre-1600 * 313 – The decisions of the Edict of Milan, signed by Constantine the Great and co-emperor Valerius Licinius, granting religious freedom throughout the Roman Empire, are published in Nicomedia. * 1325 – Ibn ...

–

Charles the Bald Charles the Bald (; 13 June 823 – 6 October 877), also known as CharlesII, was a 9th-century king of West Francia (843–877), King of Italy (875–877) and emperor of the Carolingian Empire (875–877). After a series of civil wars during t ...

, king of the

Franks file:Frankish arms.JPG, Aristocratic Frankish burial items from the Merovingian dynasty The Franks ( or ; ; ) were originally a group of Germanic peoples who lived near the Rhine river, Rhine-river military border of Germania Inferior, which wa ...

(d.

877 __NOTOC__ Year 877 ( DCCCLXXVII) was a common year starting on Tuesday of the Julian calendar. Events By place Europe * Summer – King Charles II ("the Bald") sets out for Italy, accompanied by his wife Richilde and a number ...

) *

Ermentrude of Orléans Ermentrude of Orléans (27 September 823 – 6 October 869) was the Queen of the Franks by her marriage to Charles II. She was the daughter of Odo, count of Orleans and Engeltrude de Fézensac. Queenship The traditional historiography on ...

, queen of the

(d. 869) * Muhammad I, Muslim

emir Emir (; ' (), also Romanization of Arabic, transliterated as amir, is a word of Arabic language, Arabic origin that can refer to a male monarch, aristocratic, aristocrat, holder of high-ranking military or political office, or other person po ...

of Córdoba (d.

886 __NOTOC__ Year 886 (Roman numerals, DCCCLXXXVI) was a common year starting on Saturday of the Julian calendar. Events By place Byzantine Empire * March – A wide-ranging conspiracy against Emperor Basil I, led by John Kourkouas (9t ...

) * Pepin II (the Younger), king of

Aquitaine Aquitaine (, ; ; ; ; Poitevin-Saintongeais: ''Aguiéne''), archaic Guyenne or Guienne (), is a historical region of southwestern France and a former Regions of France, administrative region. Since 1 January 2016 it has been part of the administ ...

Deaths

* Adelochus, archbishop of

Strasbourg Strasbourg ( , ; ; ) is the Prefectures in France, prefecture and largest city of the Grand Est Regions of France, region of Geography of France, eastern France, in the historic region of Alsace. It is the prefecture of the Bas-Rhin Departmen ...

(b. 786) * Boniface I, margrave of

Tuscany Tuscany ( ; ) is a Regions of Italy, region in central Italy with an area of about and a population of 3,660,834 inhabitants as of 2025. The capital city is Florence. Tuscany is known for its landscapes, history, artistic legacy, and its in ...

* Ceolwulf I, king of

(approximate date) *

Gondulphus Gundulf and its variants (Gondulf, Gundulph, Kundolf, Gondulphus, Gundulfus, Gundolfo, Gondon) is a Germanic given name Germanic languages, Germanic given names are traditionally wikt:dithematic, dithematic; that is, they are formed from two elem ...

, bishop of

Metz Metz ( , , , then ) is a city in northeast France located at the confluence of the Moselle (river), Moselle and the Seille (Moselle), Seille rivers. Metz is the Prefectures in France, prefecture of the Moselle (department), Moselle Departments ...

* Han Hong, general of the

Tang Dynasty The Tang dynasty (, ; zh, c=唐朝), or the Tang Empire, was an Dynasties of China, imperial dynasty of China that ruled from 618 to 907, with an Wu Zhou, interregnum between 690 and 705. It was preceded by the Sui dynasty and followed ...

b. 765) * Ljudevit, duke of the

Slavs in Lower Pannonia Early Slavs settled in the eastern and southern parts of the former Roman province of Pannonia. The term ''Lower Pannonia'', was used to designate those areas of the Pannonian Plain that lie to the east and south of the river Rába, with the ...

* Thekla, Byzantine empress (approximate date) *

, Byzantine general and

usurper A usurper is an illegitimate or controversial claimant to power, often but not always in a monarchy. In other words, one who takes the power of a country, city, or established region for oneself, without any formal or legal right to claim it a ...

* Timothy I, Syrian

patriarch The highest-ranking bishops in Eastern Orthodoxy, Oriental Orthodoxy, the Roman Catholic Church (above major archbishop and primate), the Hussite Church, Church of the East, and some Independent Catholic Churches are termed patriarchs (and ...

* Wulfheard, bishop of

Hereford Hereford ( ) is a cathedral city and the county town of the ceremonial county of Herefordshire, England. It is on the banks of the River Wye and lies east of the border with Wales, north-west of Gloucester and south-west of Worcester. With ...

(approximate date)

References

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