__NOTOC__ Year 866 ( DCCCLXVI) was a

common year starting on Tuesday A common year starting on Tuesday is any non-leap year (i.e. a year with 365 days) that begins on Tuesday, 1 January, and ends on Tuesday, 31 December. Its dominical letter hence is F. The most recent year of such kind was 2019, and the next one wi ...

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

April 21 Events Pre-1600 * 753 BC – Romulus founds Rome ( traditional date). * 43 BC – Battle of Mutina: Mark Antony is again defeated in battle by Aulus Hirtius, who is killed. Antony fails to capture Mutina and Decimus Brutus is mur ...

–

Bardas Bardas (; died 21 April 866) was a Byzantine noble and high-ranking minister. As the brother of Empress Theodora, he rose to high office under Theophilos (. Although sidelined after Theophilos's death by Theodora and Theoktistos, in 855 he en ...

, the regent of the

Byzantine Empire The Byzantine Empire, also known as the Eastern Roman Empire, was the continuation of the Roman Empire centred on Constantinople during late antiquity and the Middle Ages. Having survived History of the Roman Empire, the events that caused the ...

, is murdered by

Basil the Macedonian Basil I, nicknamed "the Macedonian" (; 811 – 29 August 886), was List of Byzantine emperors, Byzantine emperor from 867 to 886. Born to a peasant family in Macedonia (theme), Macedonia, he rose to prominence in the imperial court after gainin ...

Miletus Miletus (Ancient Greek: Μίλητος, Mílētos) was an influential ancient Greek city on the western coast of Anatolia, near the mouth of the Maeander River in present day Turkey. Renowned in antiquity for its wealth, maritime power, and ex ...

, while conducting a large-scale expedition against the

Saracen upright 1.5, Late 15th-century German woodcut depicting Saracens ''Saracen'' ( ) was a term used both in Greek and Latin writings between the 5th and 15th centuries to refer to the people who lived in and near what was designated by the Rom ...

stronghold of

Crete Crete ( ; , Modern Greek, Modern: , Ancient Greek, Ancient: ) is the largest and most populous of the Greek islands, the List of islands by area, 88th largest island in the world and the List of islands in the Mediterranean#By area, fifth la ...

. *

May 26 Events Pre-1600 * 17 – Germanicus celebrates a triumph in Rome for his victories over the Cherusci, Chatti, and other German tribes west of the Elbe. * 451 – Battle of Avarayr between Armenian rebels and the Sasanian Empire ta ...

– Basil the Macedonian is crowned co-emperor of the

, and is

adopted Adoption is a process whereby a person assumes the parenting of another, usually a child, from that person's biological or legal parent or parents. Legal adoptions permanently transfer all rights and responsibilities, along with filiation, from ...

by the much younger Michael III.

Europe

May 27 Events Pre-1600 * 1096 – Count Emicho enters Mainz, where his followers massacre Jewish citizens. At least 600 Jews are killed. * 1120 – Richard III of Capua is anointed as Prince two weeks before his untimely death. * 1153 &nda ...

– King Ordoño I, ruler of the

Kingdom of Asturias The Kingdom of Asturias was a kingdom in the Iberian Peninsula founded by the nobleman Pelagius who traditionally has been described as being of Visigothic stock. Modern research is leaning towards the view that Pelagius was of Hispano-Roman ...

, dies after a 16-year reign. He is succeeded by his son, Alfonso III, who later is referred to as "Alfonso the Great". *

July 2 This date marks the halfway point of the year. In common years, the midpoint of the year occurs at noon on this date, while in leap years, it occurs at midnight (start of the day). Events Pre-1600 * 437 – Emperor Valentinian III begin ...

–

Battle of Brissarthe The Battle of Brissarthe was fought on 2 July 866, between the West Franks and a joint Breton-Viking army near Brissarthe, Neustria. It was marked by the death of Robert the Strong, the Neustrian margrave, and Ranulf I, the duke of Aquitaine. ...

: Frankish forces, led by

Robert the Strong Robert the Strong (; c. 830 – 866) was the father of two kings of West Francia: Odo (or Eudes) and Robert I of France. His family is named after him and called the Robertians. In 853, he was named '' missus dominicus'' by Charles the Bald, ...

, are defeated by a joint

Breton Breton most often refers to: *anything associated with Brittany, and generally **Breton people **Breton language, a Southwestern Brittonic Celtic language of the Indo-European language family, spoken in Brittany ** Breton (horse), a breed **Gale ...

Viking Vikings were seafaring people originally from Scandinavia (present-day Denmark, Norway, and Sweden), who from the late 8th to the late 11th centuries raided, pirated, traded, and settled throughout parts of Europe.Roesdahl, pp. 9� ...

army. *

Louis II, Holy Roman Emperor Louis II (825 – 12 August 875), sometimes called the Younger, was the king of Italy and emperor of the Carolingian Empire from 844, co-ruling with his father Lothair I until 855, after which he ruled alone. Louis's usual title was ''impera ...

, defeats the Saracen invaders who are ravaging southern

Italy Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land b ...

Britain

* The

Great Heathen Army The Great Heathen Army, also known as the Viking Great Army,Hadley. "The Winter Camp of the Viking Great Army, AD 872–3, Torksey, Lincolnshire", ''Antiquaries Journal''. 96, pp. 23–67 was a coalition of Scandinavian warriors who invaded ...

of the

Vikings Vikings were seafaring people originally from Scandinavia (present-day Denmark, Norway, and Sweden), who from the late 8th to the late 11th centuries raided, pirated, traded, and settled throughout parts of Europe.Roesdahl, pp. 9� ...

rides north to

Northumbria Northumbria () was an early medieval Heptarchy, kingdom in what is now Northern England and Scottish Lowlands, South Scotland. The name derives from the Old English meaning "the people or province north of the Humber", as opposed to the Sout ...

. The Northumbrians are preoccupied with a

civil war A civil war is a war between organized groups within the same Sovereign state, state (or country). The aim of one side may be to take control of the country or a region, to achieve independence for a region, or to change government policies.J ...

, and the

Danes Danes (, ), or Danish people, are an ethnic group and nationality native to Denmark and a modern nation identified with the country of Denmark. This connection may be ancestral, legal, historical, or cultural. History Early history Denmark ...

enter

York York is a cathedral city in North Yorkshire, England, with Roman Britain, Roman origins, sited at the confluence of the rivers River Ouse, Yorkshire, Ouse and River Foss, Foss. It has many historic buildings and other structures, such as a Yor ...

unopposed.

Italy

* An army in

Lucera Lucera (Neapolitan language, Lucerino: ) is an Italian city of 34,243 inhabitants in the province of Foggia in the region of Apulia, and the seat of the Diocese of Lucera-Troia. Located upon a flat knoll in the Tavoliere delle Puglie, Tavoliere ...

is assembled by orders of Louis II in preparation for an attack on the

Emirate of Bari The Emirate of Bari () was a short-lived Islamic state in Apulia (in present-day Italy), ruled by Berbers.Bondioli, L. M. (2018). "Chapter 23 Islamic Bari between the Aghlabids and the Two Empires". In The Aghlabids and Their Neighbors. Leiden, Th ...

Abbasid Caliphate

October 17 Events Pre-1600 * 690 – Empress Wu Zetian establishes the Zhou Dynasty of China. * 1091 – London tornado of 1091: A tornado thought to be of strength T8/F4 strikes the heart of London. * 1346 – The English capture King D ...

– Caliph

al-Musta'in Abū al-ʿAbbās Aḥmad ibn Muḥammad ibn Muḥammad al-Mustaʿīn bi-ʾllāh (; 836 – 17 October 866), better known by his regnal title al-Mustaʿīn (836 – 17 October 866) was the Abbasid caliph from 862 to 866, during the "Anarchy at ...

is put to death, after a 4-year reign. He is succeeded by

al-Mu'tazz Abū ʿAbd Allāh Muḥammad ibn Jaʿfar ibn Muḥammad ibn Hārūn al-Muʿtazz bi-ʾLlāh (; 847 – 16 July 869), better known by his regnal title al-Muʿtazz bi-ʾLlāh (, "He who is strengthened by God") was the Abbasid caliph from 866 t ...

, who becomes the youngest Abbasid

caliph A caliphate ( ) is an institution or public office under the leadership of an Islamic steward with Khalifa, the title of caliph (; , ), a person considered a political–religious successor to the Islamic prophet Muhammad and a leader of ...

to assume power. * The Kharijite revolt against the

Abbasid Caliphate The Abbasid Caliphate or Abbasid Empire (; ) was the third caliphate to succeed the Islamic prophet Muhammad. It was founded by a dynasty descended from Muhammad's uncle, Abbas ibn Abd al-Muttalib (566–653 CE), from whom the dynasty takes ...

begins in Al-Jazira (Upper Mesopotamia), which will last for 30 years.

Japan

* Fujiwara no Yoshifusa becomes

regent In a monarchy, a regent () is a person appointed to govern a state because the actual monarch is a minor, absent, incapacitated or unable to discharge their powers and duties, or the throne is vacant and a new monarch has not yet been dete ...

('' sesshō'') to assist the child emperor Seiwa, starting the Fujiwara regency.

By topic

Religion

Boris I Boris I (also ''Bogoris''), venerated as Saint Boris I (Mihail) the Baptizer (, ; died 2 May 907), was the ruler (knyaz) of the First Bulgarian Empire from 852 to 889. Despite a number of military setbacks, the reign of Boris I was marked wit ...

, ruler (''

knyaz A , also , ''knjaz'' or (), is a historical Slavs, Slavic title, used both as a royal and noble title in different times. It is usually translated into English language, English as 'prince', 'king' or 'duke', depending on specific historical c ...

'') of the

Bulgarian Empire Bulgarian Empire may refer to: * First Bulgarian Empire The First Bulgarian Empire (; was a medieval state that existed in Southeastern Europe between the 7th and 11th centuries AD. It was founded in 680–681 after part of the Bulgars, led b ...

, sends a

diplomatic mission A diplomatic mission or foreign mission is a group of people from a state or organization present in another state to represent the sending state or organization officially in the receiving or host state. In practice, the phrase usually denotes ...

, led by the Bulgarian nobleman

Peter Peter may refer to: People * List of people named Peter, a list of people and fictional characters with the given name * Peter (given name) ** Saint Peter (died 60s), apostle of Jesus, leader of the early Christian Church * Peter (surname), a su ...

, to

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, ...

, in an effort to renew ties with the West. *

Pope Nicholas I Pope Nicholas I (; c. 800 – 13 November 867), called Nicholas the Great, was the bishop of Rome and ruler of the Papal States from 24 April 858 until his death on 13 November 867. He is the last of the three popes listed in the Annuario Pontif ...

orders that all Catholics should abstain from eating the "flesh, blood, or marrow" of warm-blooded animals on Wednesdays and Fridays. * Pope Nicholas I forbids the use of

torture Torture is the deliberate infliction of severe pain or suffering on a person for reasons including corporal punishment, punishment, forced confession, extracting a confession, interrogational torture, interrogation for information, or intimid ...

in prosecutions for

witchcraft Witchcraft is the use of Magic (supernatural), magic by a person called a witch. Traditionally, "witchcraft" means the use of magic to inflict supernatural harm or misfortune on others, and this remains the most common and widespread meanin ...

(approximate date).

Births

June 10 Events Pre-1600 * 671 – Emperor Tenji of Japan introduces a water clock ( clepsydra) called ''Rokoku''. The instrument, which measures time and indicates hours, is placed in the capital of Ōtsu. * 1190 – Third Crusade: Frederic ...

– Uda, emperor of

Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...

(d.

931 Year 931 ( CMXXXI) was a common year starting on Saturday of the Julian calendar. Events By place North Africa * The Ummayad Caliphate of Córdoba invades and conquers the city of Ceuta, which was ruled by the Berber dynasty Banu I ...

) *

September 19 Events Pre-1600 * 96 – Nerva, suspected of complicity of the death of Domitian, is declared emperor by Senate. The Senate then annuls laws passed by Domitian and orders his statues to be destroyed. * 634 – Siege of Damascus: The ...

– Leo VI, Byzantine emperor (d. 912) *

Carloman II Carloman II ( 866 – 6 December 884) was the King of West Francia (future France) from 879 until his death. A member of the Carolingian dynasty, he and his elder brother Louis III, divided the kingdom between themselves and ruled jointly until ...

, king of the

West Frankish Kingdom In medieval historiography, West Francia (Medieval Latin: ) or the Kingdom of the West Franks () constitutes the initial stage of the Kingdom of France and extends from the year 843, from the Treaty of Verdun, to 987, the beginning of the Capeti ...

(approximate date) *

Robert I Robert I may refer to: * Robert I, Duke of Neustria (697–748) *Robert I of France (866–923), King of France, 922–923, rebelled against Charles the Simple * Rollo, Duke of Normandy (c. 846 – c. 930; reigned 911–927) * Robert I Archbishop o ...

, king of the West Frankish Kingdom (d. 923) * Yao Yi, chancellor of

Later Tang Tang, known in historiography as the Later Tang, was a short-lived imperial dynasty of China and the second of the Five Dynasties during the Five Dynasties and Ten Kingdoms period in Chinese history. The first three of the Later Tang's four ...

(d. 940)

Deaths

–

, Byzantine chief minister and

– Ordoño I, king of

Asturias Asturias (; ; ) officially the Principality of Asturias, is an autonomous communities of Spain, autonomous community in northwest Spain. It is coextensive with the provinces of Spain, province of Asturias and contains some of the territory t ...

June 21 Events Pre-1600 * 533 – A Byzantine expeditionary fleet under Belisarios sails from Constantinople to attack the Vandals in Africa, via Greece and Sicily. * 1307 – Külüg Khan is enthroned as Khagan of the Mongols and Wuzong o ...

– Rodulf, Frankish

archbishop In Christian denominations, an archbishop is a bishop of higher rank or office. In most cases, such as the Catholic Church, there are many archbishops who either have jurisdiction over an ecclesiastical province in addition to their own archdi ...

–

, Frankish

nobleman Nobility is a social class found in many societies that have an aristocracy. It is normally appointed by and ranked immediately below royalty. Nobility has often been an estate of the realm with many exclusive functions and characteristics. T ...

July 16 Events Pre-1600 * 622 – The Hijrah of Muhammad begins, marking the beginning of the Islamic calendar. * 997 – Battle of Spercheios: Bulgarian forces of Tsar Samuel are defeated by a Byzantine army under general Nikephoros Ouran ...

–

Irmgard Irmgard is a feminine German given name. Notable people with the name include: * Irmgard of Berg (fl. 12th century), German noble, daughter of Adolf VI, Count of Berg * Irmgard of Chiemsee (c. 831/833 – 16 July 866) * Irmgard of Cleves (c. 1307 ...

, Frankish

abbess An abbess (Latin: ''abbatissa'') is the female superior of a community of nuns in an abbey. Description In the Catholic Church (both the Latin Church and Eastern Catholic), Eastern Orthodox, Coptic, Lutheran and Anglican abbeys, the mod ...

–

Al-Musta'in Abū al-ʿAbbās Aḥmad ibn Muḥammad ibn Muḥammad al-Mustaʿīn bi-ʾllāh (; 836 – 17 October 866), better known by his regnal title al-Mustaʿīn (836 – 17 October 866) was the Abbasid caliph from 862 to 866, during the "Anarchy at ...

, Abbasid

Adelaide of Tours Adelaide of Tours (''Adélaïde'', 820 – 866) was a prominent noblewoman in the Carolingian Empire and daughter of count Hugh of Tours and his wife Ava, who was a sister of count Matfrid of Orléans. She married an East Frankish nobleman ...

, Frankish noblewoman *

Al-Mu'ayyad Ibrahim ibn Jaʽfar al-Mutawakkil (; died 866), better known by his '' laqab'' al-Mu'ayyad (, was an Abbasid prince, the third son of the Abbasid caliph al-Mutawakkil, He was the governor of Syria from 850 to 861 and also for a time third-in-lin ...

, Abbasid prince * Charles the Child, 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 ...

Eberhard Eberhard is an old Germanic name meaning the strength or courage of a wild boar. People First name *Eberhard of Friuli (815–866), Duke and key figure in the Carolingian Empire *Eberhard of Béthune (died 1212), Flemish grammarian *Eberhard I, Du ...

, duke of

Friuli Friuli (; ; or ; ; ) is a historical region of northeast Italy. The region is marked by its separate regional and ethnic identity predominantly tied to the Friulians, who speak the Friulian language. It comprises the major part of the autono ...

* Emenon, Frankish nobleman * Hungerus Frisus, bishop of

Utrecht Utrecht ( ; ; ) is the List of cities in the Netherlands by province, fourth-largest city of the Netherlands, as well as the capital and the most populous city of the Provinces of the Netherlands, province of Utrecht (province), Utrecht. The ...

Linji Yixuan Japanese painting of Linji Linji Yixuan (; ''Rinzai Gigen''; died 866 CE) was a Tang dynasty (618-907) Chinese monk and teacher of the Hongzhou school of Chinese Chan (Zen). Linji was the leading figure of Chan Buddhism in the Tang, and the '' ...

, Chinese monk and founder of the

Linji school The Línjì school () is a school of Chan Buddhism named after Linji Yixuan (d. 866). It took prominence in Song dynasty, Song China (960–1279), spread to Japan as the Rinzai school and influenced the nine mountain schools of Korean Seon. Hi ...

* Liudolf, duke of

Saxony Saxony, officially the Free State of Saxony, is a landlocked state of Germany, bordering the states of Brandenburg, Saxony-Anhalt, Thuringia, and Bavaria, as well as the countries of Poland and the Czech Republic. Its capital is Dresden, and ...

* Ranulf I, Frankish nobleman (b. 820) *

Robert The name Robert is an ancient Germanic given name, from Proto-Germanic "fame" and "bright" (''Hrōþiberhtaz''). Compare Old Dutch ''Robrecht'' and Old High German ''Hrodebert'' (a compound of ''Hrōþ, Hruod'' () "fame, glory, honour, prais ...

, Frankish nobleman (b. 834) * Rudolph, Frankish nobleman * Wang Shaoyi, 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 ...

* Yahya ibn Yahya, Idrisid emir of Morocco

References

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