__NOTOC__ Year 821 ( DCCCXXI) 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

* Byzantine general

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 ...

leads a revolt, and secures control over most of the Byzantine themes (provinces) in

Anatolia Anatolia (), also known as Asia Minor, is a peninsula in West Asia that makes up the majority of the land area of Turkey. It is the westernmost protrusion of Asia and is geographically bounded by the Mediterranean Sea to the south, the Aegean ...

. He gets recognition from 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 ...

, and concludes a

peace treaty A peace treaty is an treaty, agreement between two or more hostile parties, usually country, countries or governments, which formally ends a declaration of war, state of war between the parties. It is different from an armistice, which is an ag ...

with Caliph

al-Ma'mun Abū al-ʿAbbās Abd Allāh ibn Hārūn al-Maʾmūn (; 14 September 786 – 9 August 833), better known by his regnal name al-Ma'mun (), was the seventh Abbasid caliph, who reigned from 813 until his death in 833. His leadership was marked by t ...

. Thomas crosses with his fleet from Abydos to

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 ...

, and blockades 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 ...

Constantinople Constantinople (#Names of Constantinople, see other names) was a historical city located on the Bosporus that served as the capital of the Roman Empire, Roman, Byzantine Empire, Byzantine, Latin Empire, Latin, and Ottoman Empire, Ottoman empire ...

; but Thomas' first attack on the capital fails.

Europe

February February is the second month of the year in the Julian calendar, Julian and Gregorian calendars. The month has 28 days in common years and 29 in leap years, with the February 29, 29th day being called the ''leap day''. February is the third a ...

– Duke

Borna of Croatia Borna was the duke of Croatia (''Dalmatia and Liburnia'') from to 821 and vassal of the Frankish Empire. He is mentioned in the Royal Frankish Annals (''Annales regni Francorum'') in entries regarding 818–821. His titles were "Duke of the Gudu ...

dies after an 11-year reign, as

vassal A vassal or liege subject is a person regarded as having a mutual obligation to a lord or monarch, in the context of the feudal system in medieval Europe. While the subordinate party is called a vassal, the dominant party is called a suzerain ...

of the

Frankish Empire The Carolingian Empire (800–887) was a Frankish-dominated empire in Western and Central Europe during the Early Middle Ages. It was ruled by the Carolingian dynasty, which had ruled as kings of the Franks since 751 and as kings of the Lomba ...

. He is succeeded by his nephew,

Vladislav Vladislav ( (', '); , ; Russian language, Russian, Ukrainian language, Ukrainian, Bulgarian language, Bulgarian, Macedonian language, Macedonian, sh-Cyrl, Владислав, ) is a male given names, given name of Slavs, Slavic origin. Variatio ...

. 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 ...

recognizes him as prince of

Dalmatia Dalmatia (; ; ) is a historical region located in modern-day Croatia and Montenegro, on the eastern shore of the Adriatic Sea. Through time it formed part of several historical states, most notably the Roman Empire, the Kingdom of Croatia (925 ...

and

Liburnia Liburnia () in ancient geography was the land of the Liburnians, a region along the northeastern Adriatic coast in Europe, in modern Croatia, whose borders shifted according to the extent of the Liburnian dominance at a given time between 11th ...

, at the

Council of Aachen A number of significant councils of the Latin Church were held at Aachen (also known in French as ''Aix-la-Chapelle'') in the early Middle Ages. In the mixed council of 798, Charlemagne proclaimed a capitulary of eighty-one chapters, largely a repe ...

. *

October October is the tenth month of the year in the Julian and Gregorian calendars. Its length is 31 days. The eighth month in the old calendar of Romulus , October retained its name (from Latin and Greek ''ôctō'' meaning "eight") after Januar ...

–

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 ...

, co-emperor and eldest son of Louis I, marries

Ermengarde Ermengarde or Ermengard or Ermingarde or Irmingard or Irmgard is a feminine given name of Germanic origin derived from the Germanic words "ermen/irmin," meaning "whole, universal" and "gard" meaning "enclosure, protection". Armgarð is a Faroese ver ...

Thionville Thionville (; ; ) is a city in the northeastern French Departments of France, department of Moselle (department), Moselle. The city is located on the left bank of the river Moselle (river), Moselle, opposite its suburb Yutz. History Thionvi ...

(northeastern

France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...

). She is the daughter of Count Hugh of Tours.

Britain

* King

Coenwulf of Mercia Coenwulf (; also spelled Cenwulf, Kenulf, or Kenwulph; ) was the List of monarchs of Mercia, king of Mercia from December 796 until his death in 821. He was a descendant of King Pybba of Mercia, Pybba, who ruled Mercia in the early 7th century. ...

dies in

Basingwerk Basingwerk Abbey () is a Grade I listed buildings in Flintshire, Grade I listed ruined abbey near Holywell, Flintshire, Holywell, Flintshire, Wales. The abbey, which was founded in the 12th century, belonged to the Cistercian, Order of Cistercia ...

near

Holywell Holywell may refer to: England * Holywell, Bedfordshire * Holywell, Cambridgeshire * Holywell, Cornwall * Holywell, Dorset * Holywell, Eastbourne, East Sussex * Holywell, Gloucestershire, a List of United Kingdom locations: Ho-Hoo#Hol, location in ...

(

Wales Wales ( ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by the Irish Sea to the north and west, England to the England–Wales border, east, the Bristol Channel to the south, and the Celtic ...

), while preparing for another assault on

Powys Powys ( , ) is a Principal areas of Wales, county and Preserved counties of Wales, preserved county in Wales. It borders Gwynedd, Denbighshire, and Wrexham County Borough, Wrexham to the north; the English Ceremonial counties of England, ceremo ...

, and is buried in

Winchcombe Abbey Winchcombe Abbey is a now-vanished Benedictine abbey in Winchcombe, Gloucestershire; this abbey was once in the heart of Mercia, an Anglo Saxon kingdom at the time of the Heptarchy in England. The Abbey was founded c. 798 for three hundred Bene ...

. He is briefly succeeded by his son

Cynehelm Saint Kenelm (or Cynehelm) was an Anglo-Saxons, Anglo-Saxon saint, venerated throughout medieval England, and mentioned in the ''Canterbury Tales'' (The Nun's Priest's Tale, lines 290–301, in which the cockerel Chauntecleer tries to demonstrate ...

, but he is killed, probably fighting the Welsh, though supposedly through the treachery of his sister

Cwenthryth Cwenthryth (fl. 811-c.827) was a daughter of King Coenwul of Mercia. In 811 she witnessed a charter of her father as ''filia regis'' (king's daughter). She was abbess of Winchcombe Minster, Reculver and Minster in Thanet, which she inherited f ...

. The

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 ...

n throne passes to Coenwulf's brother, Ceolwulf I.

Abbasid Caliphate

* By the time

Al-Ma'mun Abū al-ʿAbbās Abd Allāh ibn Hārūn al-Maʾmūn (; 14 September 786 – 9 August 833), better known by his regnal name al-Ma'mun (), was the seventh Abbasid caliph, who reigned from 813 until his death in 833. His leadership was marked by t ...

became caliph, the Arabs and the Byzantines had settled down into border skirmishing, with Arab raids deep into

to capture booty. *

Tahir ibn Husayn Ṭāhir ibn Ḥusayn (, ''Tahir bin al-Husayn''), also known as Dhul-Yamīnayn (, "the ambidextrous"), and al-Aʿwar (, "the one-eyed"), was a general and governor during the Abbasid Caliphate. Specifically, he served under al-Ma'mun during the ...

, an

Iranian Iranian () may refer to: * Something of, from, or related to Iran ** Iranian diaspora, Iranians living outside Iran ** Iranian architecture, architecture of Iran and parts of the rest of West Asia ** Iranian cuisine, cooking traditions and practic ...

general, is appointed as governor of

Khurasan KhorasanDabeersiaghi, Commentary on Safarnâma-e Nâsir Khusraw, 6th Ed. Tehran, Zavvâr: 1375 (Solar Hijri Calendar) 235–236 (; , ) is a historical eastern region in the Iranian Plateau in West Asia, West and Central Asia that encompasses wes ...

, as a reward for supporting the

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

caliph

in the

Fourth Fitna The Fourth Fitna, Fourth Muslim Civil War, or Great Abbasid Civil War resulted from the conflict between the brothers al-Amin and al-Ma'mun over the succession to the throne of the Abbasid Caliphate. Their father, Caliph Harun al-Rashid, had name ...

. * Caliph Al-Ma'mun appointed Nu'aym ibn al-Waddah al-Azdi as the governor of Yemen in 821.

Births

Gao Pian Gao Pian (; 821? – 24 September 887Academia Sinicabr>Chinese-Western Calendar Converter.''Zizhi Tongjian'', vol. 257.), courtesy name Qianli (), formally the Prince of Bohai (), was a Chinese military general, poet, and politician of the Tang ...

, 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 ...

(d.

887 __NOTOC__ Year 887 ( DCCCLXXXVII) was a common year starting on Sunday of the Julian calendar. Events By place Europe * November 17 – East Frankish magnates revolt against the inept emperor Charles III (the Fat) in an assembly ...

) * Gisela, Frankish princess, daughter of

Louis the Pious Louis the Pious (; ; ; 16 April 778 – 20 June 840), also called the Fair and the Debonaire, was King of the Franks and Holy Roman Emperor, co-emperor with his father, Charlemagne, from 813. He was also King of Aquitaine from 781. As the only ...

Ibn Abi Asim Abu Bakr Ahmad bin `Amr ad-Dahhak bin Makhlad ash-Shaibani (), widely known as Ibn Abi Asim (), was an Iraqi Sunni scholar of the 9th century. He is most famous for his work in the field of hadith science. Biography Family and early life Ib ...

, Muslim

Sunni Sunni Islam is the largest branch of Islam and the largest religious denomination in the world. It holds that Muhammad did not appoint any successor and that his closest companion Abu Bakr () rightfully succeeded him as the caliph of the Mu ...

scholar (or 822) * 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 ...

(approximate date)

Deaths

April 7 Events Pre-1600 * 451 – Attila the Hun captures Metz in France, killing most of its inhabitants and burning the town. * 529 – First '' Corpus Juris Civilis'', a fundamental work in jurisprudence, is issued by Eastern Roman Em ...

–

George the Standard-Bearer Saint George the Standard-Bearer (Greek language, Greek: ''Ἅγιος Γεώργιος ὁ Σημειοφόρος''),Great Synaxaristes: Ὁ Ἅγιος Γεώργιος ὁ Σημειοφόρος Ἐπίσκοπος Μυτιλήνης'' also k ...

, archbishop of

Mytilene Mytilene (; ) is the capital city, capital of the Greece, Greek island of Lesbos, and its port. It is also the capital and administrative center of the North Aegean Region, and hosts the headquarters of the University of the Aegean. It was fo ...

(b. c. 776) *

May 2 Events Pre-1600 * 1194 – King Richard I of England gives Portsmouth its first royal charter. * 1230 – William de Braose is hanged by Prince Llywelyn the Great. * 1536 – Anne Boleyn, Queen of England, is arrested and impris ...

–

Liu Zong Liú Zǒng () (died May 2, 821), dharma name Dàjué (), formally Duke of Chǔ (), was a general of the Táng Dynasty. He took over control of Lulong Circuit, Lúlóng Circuit (盧龍, headquartered in modern Beijing) in 810 after killing his fathe ...

, general of the Tang dynasty *

December 18 Events Pre-1600 * 1118 – The city of Zaragoza is conquered by king Alfonso I of Aragon from the Almoravid. * 1271 – Kublai Khan renames his empire "Yuan" (元 yuán), officially marking the start of the Yuan dynasty of Mongolia an ...

– Theodulf, bishop of

Orléans Orléans (,"Orleans"
(US) and Arno The Arno is a river in the Tuscany region of Italy. It is the most important river of central Italy after the Tiber. Source and route The river originates on Monte Falterona in the Casentino area of the Apennines, and initially takes a sou ...

, archbishop of

Salzburg Salzburg is the List of cities and towns in Austria, fourth-largest city in Austria. In 2020 its population was 156,852. The city lies on the Salzach, Salzach River, near the border with Germany and at the foot of the Austrian Alps, Alps moun ...

* Artrí mac Cathail, king of

Munster Munster ( or ) is the largest of the four provinces of Ireland, located in the south west of the island. In early Ireland, the Kingdom of Munster was one of the kingdoms of Gaelic Ireland ruled by a "king of over-kings" (). Following the Nor ...

(Ireland) *

Benedict of Aniane Benedict of Aniane (; ; 747 – 12 February 821 AD), born Witiza and called the Second Benedict, was a Benedictine monk and monastic reformer who had a substantial impact on the religious practice of the Carolingian Empire. His feast day is ...

, Frankish

monk A monk (; from , ''monachos'', "single, solitary" via Latin ) is a man who is a member of a religious order and lives in a monastery. A monk usually lives his life in prayer and contemplation. The concept is ancient and can be seen in many reli ...

* Borna, duke ('' knez'') of

Croatia Croatia, officially the Republic of Croatia, is a country in Central Europe, Central and Southeast Europe, on the coast of the Adriatic Sea. It borders Slovenia to the northwest, Hungary to the northeast, Serbia to the east, Bosnia and Herze ...

* Coenwulf, king of

Egbert Egbert is a name that derives from old Germanic words meaning "bright edge", such as that of a blade. Anglo-Saxon variant spellings include Ecgberht () and Ecgbert. German variant spellings include Eckbert and Ekbert. People with the first name Mi ...

, bishop of

Lindisfarne Lindisfarne, also known as Holy Island, is a tidal island off the northeast coast of England, which constitutes the civil parishes in England, civil parish of Holy Island in Northumberland. Holy Island has a recorded history from the 6th centu ...

* Guisclafred, Frankish nobleman (approximate date) * Li Su, general of the Tang dynasty (b. 773) * Tian Hongzheng, general of the Tang dynasty (b. 764) *

Wei Guanzhi Wei Guanzhi (韋貫之) (760 – November 13, 821), né Wei Chun (韋純), courtesy name Guanzhi (貫之) or Zhengli (正理), was a Chinese politician and writer. He served as a chancellor during the reign of Emperor Xianzong. Background Wei Ch ...

chancellor of the Tang dynasty The Grand chancellor (China), chancellor () was a semi-formally designated office position for a number of high-level officials at one time during the Tang dynasty of China. This list also includes List of chancellors of Wu Zetian, chancellors ...

(b. 760) * Zheng Yuqing, chancellor of the Tang dynasty (b. 746)

References

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