__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 ...

(link will display the full calendar) of the

Julian calendar The Julian calendar, proposed by Roman consul Julius Caesar in 46 BC, was a reform of the Roman calendar. It took effect on , by edict. It was designed with the aid of Greek mathematicians and astronomers such as Sosigenes of Alexandr ...

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 murdered ...

–

Bardas Bardas ( el, Βάρδας; died 21 April 866) was a Byzantine Empire, Byzantine noble and high-ranking minister. As the brother of Empress Theodora (wife of Theophilos), Theodora, he rose to high office under Theophilos (emperor), Theophilos (. ...

, the regent of the

Byzantine Empire The Byzantine Empire, also referred to as the Eastern Roman Empire or Byzantium, was the continuation of the Roman Empire primarily in its eastern provinces during Late Antiquity and the Middle Ages, when its capital city was Constantinopl ...

, is murdered by

Basil the Macedonian Basil I, called the Macedonian ( el, Βασίλειος ὁ Μακεδών, ''Basíleios ō Makedṓn'', 811 – 29 August 886), was a Byzantine Emperor who reigned from 867 to 886. Born a lowly peasant in the theme of Macedonia, he rose in the ...

Miletus Miletus (; gr, Μῑ́λητος, Mī́lētos; Hittite transcription ''Millawanda'' or ''Milawata'' (exonyms); la, Mīlētus; tr, Milet) was an ancient Greek city on the western coast of Anatolia, near the mouth of the Maeander River in a ...

, while conducting a large-scale expedition against the

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

stronghold of

Crete Crete ( el, Κρήτη, translit=, Modern: , Ancient: ) is the largest and most populous of the Greek islands, the 88th largest island in the world and the fifth largest island in the Mediterranean Sea, after Sicily, Sardinia, Cyprus, and ...

. *

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 take ...

– 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 &ndash ...

– King Ordoño I, ruler of the

Kingdom of Asturias The Kingdom of Asturias ( la, Asturum Regnum; ast, Reinu d'Asturies) was a kingdom in the Iberian Peninsula founded by the Visigothic nobleman Pelagius. It was the first Christian political entity established after the Umayyad conquest of V ...

, 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 Events Pre-1600 * 437 – Emperor Valentinian III begins his reign over the Western Roman Empire. His mother Galla Placidia ends her regency, but continues to exercise political influence at the court in Rome. * 626 – Li Shimin, th ...

–

Battle of Brissarthe The Battle of Brissarthe was fought on 2 July 866, between the 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. I ...

: Frankish forces, led by

Robert the Strong Robert the Strong (french: Robert le Fort; 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'' ...

, 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 **Ga ...

Viking Vikings ; non, víkingr is the modern name given to 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 se ...

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 ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical re ...

Britain

* The

Great Heathen Army The Great Heathen Army,; da, Store Hedenske Hær 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 Scandin ...

of the

Vikings Vikings ; non, víkingr is the modern name given to 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 se ...

rides north to

Northumbria la, Regnum Northanhymbrorum , conventional_long_name = Kingdom of Northumbria , common_name = Northumbria , status = State , status_text = Unified Anglian kingdom (before 876)North: Anglian kingdom (af ...

. The Northumbrians are preoccupied with a

civil war A civil war or intrastate war is a war between organized groups within the same 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 ...

, and the

Danes Danes ( da, danskere, ) are a North Germanic 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. Danes generally regard t ...

enter

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

unopposed.

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 Davi ...

– Caliph

al-Musta'in Abū al-ʿAbbās Aḥmad ibn Muḥammad ibn Muḥammad ( ar, أبو العباس أحمد بن محمد بن محمد; 836 – 17 October 866), better known by his regnal title Al-Mustaʿīn (836 – 17 October 866) was the Abbasid caliph from 86 ...

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

al-Mu'tazz Abū ʿAbd Allāh Muḥammad ibn Jaʿfar ( ar, أبو عبد الله محمد بن جعفر; 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 to 869 ...

, who becomes the youngest Abbasid

caliph A caliphate or khilāfah ( ar, خِلَافَة, ) is an institution or public office under the leadership of an Islamic steward with the title of caliph (; ar, خَلِيفَة , ), a person considered a political-religious successor to th ...

to assume power.History of the Arabs by Philip K. Hitti. * The Kharijite revolt against the

Abbasid Caliphate The Abbasid Caliphate ( or ; ar, الْخِلَافَةُ الْعَبَّاسِيَّة, ') was the third caliphate to succeed the Islamic prophet Muhammad. It was founded by a dynasty descended from Muhammad's uncle, Abbas ibn Abdul-Muttalib ...

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

Japan

Fujiwara no Yoshifusa , also known as ''Somedono no Daijin'' or ''Shirakawa-dono'', was a Japanese people, Japanese statesman, courtier and politician during the Heian period.Nussbaum, Louis-Frédéric. (2005). "Fujiwara no Nakahira" in ; Brinkley, Frank ''et al.'' (1 ...

becomes

regent A regent (from Latin : ruling, governing) is a person appointed to govern a state '' pro tempore'' (Latin: 'for the time being') because the monarch is a minor, absent, incapacitated or unable to discharge the powers and duties of the monarchy ...

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

Fujiwara Fujiwara (, written: 藤原 lit. "''Wisteria'' field") is a Japanese surname. (In English conversation it is likely to be rendered as .) Notable people with the surname include: ; Families * The Fujiwara clan and its members ** Fujiwara no Kamatari ...

regency.

By topic

Religion

Boris I Boris I, also known as Boris-Mihail (Michael) and ''Bogoris'' ( cu, Борисъ А҃ / Борисъ-Михаилъ bg, Борис I / Борис-Михаил; died 2 May 907), was the ruler of the First Bulgarian Empire in 852–889. At ...

, ruler (''

knyaz , or ( Old Church Slavonic: Кнѧзь) is a historical Slavic title, used both as a royal and noble title in different times of history and different ancient Slavic lands. It is usually translated into English as prince or duke, dependi ...

'') of the

Bulgarian Empire In the medieval history of Europe, Bulgaria's status as the Bulgarian Empire ( bg, Българско царство, ''Balgarsko tsarstvo'' ) occurred in two distinct periods: between the seventh and the eleventh centuries and again between the ...

, 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 deno ...

, 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 sur ...

, to

Rome , established_title = Founded , established_date = 753 BC , founder = King Romulus (legendary) , image_map = Map of comune of Rome (metropolitan city of Capital Rome, region Lazio, Italy).svg , map_caption ...

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

Pope Nicholas I Pope Nicholas I ( la, Nicolaus 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. He is remembered as a consolidator of papal authority, exerting dec ...

forbids the use of

torture Torture is the deliberate infliction of severe pain or suffering on a person for reasons such as punishment, extracting a confession, interrogation for information, or intimidating third parties. Some definitions are restricted to acts c ...

, in prosecutions for

witchcraft Witchcraft traditionally means the use of magic or supernatural powers to harm others. A practitioner is a witch. In medieval and early modern Europe, where the term originated, accused witches were usually women who were believed to have us ...

(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: Frederick I ...

– Uda, emperor of

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

(d.

931 Year 931 ( CMXXXI) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar. Events By place Europe * Spring – Hugh of Provence, king of Italy, cedes Lower Burgundy to Rudolph II, in r ...

) *

September 19 Events Pre-1600 * 85 – 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: Th ...

–

Leo VI Leo VI (or Leon VI, notably in Greek) may refer to : * Leo VI the Wise, Byzantine emperor 886 to 912 * Pope Leo VI, 928 to 929 * King Leo VI of Armenia (1342 – 1393), of the House of Lusignan, last Latin king of the Armenian crusader Kingdom of C ...

, Byzantine emperor (d.

912 Year 912 ( CMXII) was a leap year starting on Wednesday (link will display the full calendar) of the Julian calendar. __NOTOC__ Events By place Byzantine Empire * May 11 – Emperor Leo VI (the Wise) dies after a 26-year reign in wh ...

) *

Carloman II Carloman II ( 866 – 6 December 884) was the King of West Francia 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 the latter's d ...

, king of the

West Frankish Kingdom In medieval history, West Francia (Medieval Latin: ) or the Kingdom of the West Franks () refers to the western part of the Frankish Empire established by Charlemagne. It represents the earliest stage of the Kingdom of France, lasting from about ...

(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 of ...

, king of the West Frankish Kingdom (d.

923 __NOTOC__ Year 923 ( CMXXIII) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. Events By place Europe * June 15 – Battle of Soissons: King Robert I is killed; the Frankish a ...

) *

Yao Yi Yao Yi (姚顗) (866''Old History of the Five Dynasties'', vol. 92.-November 8, 940Academia Sinicabr>Chinese-Western Calendar Converter), courtesy name Bozhen (伯真) (per the ''Old History of the Five Dynasties'') or Baizhen (百真) (per the ''N ...

, 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 e ...

(d.

940 Year 940 ( CMXL) was a leap year starting on Wednesday (link will display the full calendar) of the Julian calendar. Events By place Europe * The tribe of the Polans begins the construction of the following fortified settlements (Gie ...

)

Deaths

–

, Byzantine chief minister and

– Ordoño I, king of

Asturias Asturias (, ; ast, Asturies ), officially the Principality of Asturias ( es, Principado de Asturias; ast, Principáu d'Asturies; Galician-Asturian: ''Principao d'Asturias''), is an autonomous communities of Spain, autonomous community in nor ...

June 21 Events Pre-1600 * 533 – A Byzantine expeditionary fleet under Belisarius sails from Constantinople to attack the Vandals in Africa, via Greece and Sicily (approximate date). * 1307 – Külüg Khan is enthroned as Khagan of the Mo ...

– 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 ranked immediately below royalty. Nobility has often been an estate of the realm with many exclusive functions and characteristics. The characteristi ...

July 16 Events Pre-1600 * 622 – The beginning of the Islamic calendar. * 997 – Battle of Spercheios: Bulgarian forces of Tsar Samuel are defeated by a Byzantine army under general Nikephoros Ouranos at the Spercheios River in Greece. * 105 ...

–

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. 130 ...

, Frankish

abbess An abbess (Latin: ''abbatissa''), also known as a mother superior, is the female superior of a community of Catholic nuns in an abbey. Description In the Catholic Church (both the Latin Church and Eastern Catholic), Eastern Orthodox, Coptic ...

–

Al-Musta'in Abū al-ʿAbbās Aḥmad ibn Muḥammad ibn Muḥammad ( ar, أبو العباس أحمد بن محمد بن محمد; 836 – 17 October 866), better known by his regnal title Al-Mustaʿīn (836 – 17 October 866) was the Abbasid caliph from 86 ...

, Abbasid

Adelaide of Tours Adelaide (Aelis) of Tours ( 820 – c. 866) was a daughter of Count Hugh of Tours and his wife Ava, who was a sister of Matfrid, Count of Orléans. She married Conrad I, Count of Auxerre, with whom she had at least two children, Hugh and Conrad t ...

, Frankish noblewoman *

Al-Mu'ayyad Ibrahim ibn Jaʽfar al-Mutawakkil ( ar, ابراهيم بن جعفر المتوكل; died 866), better known by his ''laqab'' al-Mu'ayyad (, was an Abbasid prince, the third son of the Abbasid caliph al-Mutawakkil, and brother of al-Muntasir and ...

, Abbasid prince *

Charles the Child Charles the Child (Latin ''Karolus puer'', from the ''Annales Bertiniani''; 847/848, Frankfurt am Main – 29 September 866, Buzançais) was the King of Aquitaine from October 855 until his death in 866. He was the second son of Charles the Bald a ...

, king of

Aquitaine Aquitaine ( , , ; oc, Aquitània ; eu, Akitania; Poitevin-Saintongeais: ''Aguiéne''), archaic Guyenne or Guienne ( oc, Guiana), is a historical region of southwestern France and a former administrative region of the country. Since 1 January ...

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 ( fur, Friûl, sl, Furlanija, german: Friaul) is an area of Northeast Italy with its own particular cultural and historical identity containing 1,000,000 Friulians. It comprises the major part of the autonomous region Friuli Venezia Giulia ...

Emenon Emenon (or Emeno) was the Count of Poitou (828–839), Périgord (863–866), and Angoulême (863–866). It is unknown who nominated him count of Poitou, but it was probably Pepin I of Aquitaine, at whose side he had fought against the emperor L ...

, Frankish nobleman * Hungerus Frisus, bishop of

Utrecht Utrecht ( , , ) is the List of cities in the Netherlands by province, fourth-largest city and a List of municipalities of the Netherlands, municipality of the Netherlands, capital and most populous city of the Provinces of the Netherlands, pro ...

Linji Yixuan Linji Yixuan (; ja, 臨済義玄 ''Rinzai Gigen''; died 866 CE) was the founder of the Linji school of Chan Buddhism during Tang Dynasty China. Línjì yǔlù Information on Linji is based on the ''Línjì yǔlù'' (臨濟語錄; Japanese: ' ...

, 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 China (960–1279), spread to Japan as the Rinzai school and influenced the nine mountain schools of Korean Seon. History Song d ...

* Liudolf, duke of

Saxony Saxony (german: Sachsen ; Upper Saxon: ''Saggsn''; hsb, Sakska), officially the Free State of Saxony (german: Freistaat Sachsen, links=no ; Upper Saxon: ''Freischdaad Saggsn''; hsb, Swobodny stat Sakska, links=no), is a landlocked state of ...

* Ranulf I, Frankish nobleman (b.

820 __NOTOC__ Year 820 ( DCCCXX) was a leap year starting on Sunday (link will display the full calendar) of the Julian calendar. Events By place Abbasid Caliphate *Abbasid caliph Al-Ma'mun appointed Isa ibn Yazid al-Juludi as Abbasid govern ...

) *

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 '' Hruod'' ( non, Hróðr) "fame, glory, honou ...

, Frankish nobleman (b.

834 __NOTOC__ Year 834 ( DCCCXXXIV) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar. Events By place Europe * March 1 – Emperor Louis the Pious is restored as sole ruler of the Fr ...

) * Rudolph, Frankish nobleman * Wang Shaoyi, general of the

Tang Dynasty The Tang dynasty (, ; zh, t= ), or Tang Empire, was an Dynasties in Chinese history, imperial dynasty of China that ruled from 618 to 907 AD, with an Zhou dynasty (690–705), interregnum between 690 and 705. It was preceded by the Sui dyn ...

References

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