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810
In Upper Saxony, a meteor startles Charlemane's horse, throwning him to the ground. [521]July 8
Pepin, son of Charlemagne, king of Italy, dies. [1] 
811
December 4
Charles, eldest son of emperor Charles the Great, dies at about age 39. [1] 
814
January 28
Charlemagne, German emperor/Roman Emperor (800-814), dies at age 71. [1] 
816
February 5
Frankish emperor Louis grants archbishop Salzburg immunity. [1]June 12
Saint Leo III ends his reign as Catholic Pope. [1]June 22
Stephen IV begins his reign as Catholic Pope. [1] 
817
January 24
Stefanus IV [V/Colonna] dies, ending his reign as Catholic Pope (816-17). [1]Saint Paschal I begins his reign as Catholic Pope, succeeding Stephen IV. [1] 
818
April 17
King Bernhard I of Italy dies. [1]
 
820
January 20
Abu Abdallah M ibn Idris al-Sjafi'i, Islamic (Book of Mother), dies. [1]The Book of Mother is published. [1]December 25
Leo V the Armenian, Byzantine general/Emperor (813-20), murdered. [1] 
821
February 11
Benedict of Aniane, saint, dies. [1] 
823
April 5
Pope Peschalis I crowns Lotharius I, co-emperor of France. [1] 
824
February 11
Paschal I, Italian Catholic Pope (817-24), dies. [1] 
828
April 5
Nicephorus, patriarch of Constantinopel (806-15), dies at about age 77. [1] 
837
February 27
Fifteenth recorded perihelion passage of Halley's Comet. [1]April 10
Comet 1P/837 F1 (Halley) approaches within 0.0334 astronomical units (AUs) of Earth, the closest in 2000 years. [1] 
838
January 4
Babak, Persian social/religious reformer, martyred. [1]December 13
King Pippijn I of Aquitania dies. [1] 
840
March 14
Eginhard, French nobleman/biographer (Vita Karoli Magni), dies at age 69. [1] 
842
January 20
Theophilus, Byzantine kaiser (829-42), dies. [1]February 14
Charles II and Louis the German sign treaty. [1]February 19
Medieval Iconoclastic Controversy ends as a council in Constantinople formally reinstates the veneration of icons in the churches. [1]March 20
Alfonso II the Chaste, king of Asturia (791-842), dies. [1] 
843
March 11
Icon worship officially re-instated in Aya Sofia Constantinople. [1]April 19
Judith, French empress/second wife of Louis de Vrome, dies. [1] 
844
January 25
Gregory IV begins and ends his reign as Catholic Pope. [1] 
847
January 27
Sergius II dies, ending his reign as Catholic Pope (844-847). [1]April 10
Saint Leo IV begins his reign as Catholic Pope. [1] 
850
April 20
Guntherus becomes bishop of Cologne. [1] 
852
April 29
Amalarius/Fortunatus/Symphosius of Metz/Lyon, bishop, dies at age 76. [1] 
855
July 17
Saint Leo IV ends his reign as Catholic Pope. [1]September 29
Benedict III begins his reign as Catholic Pope. [1] 
856
February 4
Hrabanus Maurus, archbishop of Mainz, dies. [1]December 22
In Damghan, Iran, an earthquake with estimated magnitude 7.9 occurs, causing estimated 200,000 deaths. [53] 
858
January 13
Aethelwolf, king of Wessex (Battle at Aclea), dies. [1]April 17
Benedict III dies, ending his reign as Catholic Pope (855-58). [1]April 24
Nicolas I succeeds Benedict III as Catholic Pope. [1] 
861
May 19
A meteorite falls in the Shinto temple grounds at Nogata-shi in Japan. [523.19] 
863
December 13
Boudouin with the Iron Arm weds Charles de Kales' daughter Judith. [1] 
865
February 3
Ansgar/Anscharius/Oskar, German first (arch)bishop of Hamburg/saint, dies. [1] 
866
January 10
Lin-chi I-hsuan [J Rinzai Gigen], Zen teacher, dies. [1]May 27
King Ordoño I of Asturia (850-66) dies. [1] 
867
February 11
Theodora the Saint, beauty queen/empress of Byzantine, dies. [1]November 13
Saint Nicholas I (the Great) dies, ending his reign as Catholic Pope (858-67). [1]December 14
Adrian II begins his reign as Catholic Pope. [1] 
869
February 14
Cyrillus, Greek apostle of Slaves, dies. [1]October 5
Fourth Council of Constantinople (eighth ecumenical council) opens. [1] 
870
February 28
Eighth ecumenical council ends in Constantinople. [1]December 31
Skirmish at Englefield: Ethelred of Wessex beats Danish invasion army. [1] 
871
January 4
Battle at Reading: Ethelred of Wessex beats Danish invasion army. [1]January 8
Battle at Ashdown: Ethelred of Wessex beats Danish invasion army. [1]January 22
Battle at Basing: Danish invasion army beats Ethelred of Wessex. [1]March 2
Battle at Marton: Ethelred of Wessex beats Danish invasion army. [1]April 23
Ethelred I, king of Wessex/brother of Alfred the Great, dies. [1] 
872
December 14
Adrian II, Italian Pope (867-72)/last married pope, dies at about age 80. [1]John VIII begins his reign as Catholic Pope. [1] 
875
December 16
Ado of Vienne, French archbishop of Vienne, dies at about age 75. [1]December 25
Charles, the Bare, crowned emperor of Rome. [1] 
876
January 31
Charles becomes king of Italy. [1] 
879
January 21
Boudouin with the Iron Arm, Earl of Flanders, dies. [1]April 10
Louis II, the stutterer, King of France (877-79), dies. [1]Louis III crowned King of France. [1] 
882
January 20
Louis II/III the Younger, German king (876-82), dies. [1]December 16
John VIII dies, ending his reign as Italian Catholic Pope (872-82). [1]Marinus I begins his reign as Catholic Pope. [1] 
883
March 8
Albumasar [Ahmad Aboe M Gafar al-Balkhi], Arabic astronomer, dies. [1] 
884
May 15
Marinus I [Martinus II] dies, ending his reign as Catholic Pope (882-84). [1]May 17
Saint Adrian III begins his reign as Catholic Pope. [1]December 12
Carloman, co-king of France (879, 882-884), dies. [1] 
885
April 6
Methodius, Greek apostle of the slaves/archbishop of Sirmium, dies. [1] 
888
January 13
Charles III, the Fat One, King of Franconia/Roman emperor, dies. [1]Duke Odo becomes king of West-France. [1] 
891
February 6
Photius, Byzantine theologist/patriarch of Constantinople/saint, dies. [1]September 1
Northmen defeated near Louvaine, France. [1]September 14
Stephen V ends his reign as Catholic Pope. [1]October 6
Formosus begins his reign as Catholic Pope. [1] 
896
February 22
Pope Formosa crowned king Arnulf of Karinthie/French emperor. [1]April 4
Formosus dies, ending his reign as Catholic Pope (891-896). [1] 
898
January 1
Odo, Earl of Paris/king of France (888-898), dies at about age 39. [1] 
899
December 8
Arnulf of Carinthia, last emperor of Austria-France, dies. [1] 
900
October 28
Alfred the Great, English monarch, dies. [1] (October 26, 901 [1]) 
910
December 20
Alfonso III de Great, king of Asturias, dies. [1] 
911
April 14
Sergius III, Italian Pope (904-11), dies. [1] 
912
April 6
Nottker, "the Stamelaar", benedictine monk/poet, dies at about age 71. [1]May 12
Leo VI Sophos, Byzantine Emperor (886-912), dies at age 45. [1] 
918
March 1
Balderik becomes bishop of Utrecht. [1]December 21
Conrad I, Duke of Franconia/German King (911-918), dies. [1] (December 23 [1]) 
919
May 12
Duke Henry of Saxon becomes king Henry I of Oostfrankische rich. [1] 
922
March 27
Al-Hallaj al-Mughith-al-Hsayn Mansur, Persian mystic, beheaded at age 64. [1] 
923
February 16
Abu Dja'far Mohammed Djarir al-Tabari, Islamic historian, dies at age 83. [1] 
924
April 7
Emperor Berengarius I of Italy murdered. [1] 
933
March 15
Battle at Riade: German King Henry I beats Magyaren. [1] 
936
January 3
Duke Alberik II of Spoleto appoints his son Pope Leo VII. [1] 
942
May 16
Saadiah Gaon head of Talmudic Academy of Sura, dies. [1] 
946
January 15
Caliph al-Mustaqfi blinded/ousted. [1]May 25
Edmund the Older king of Wessex/England (939-46), dies. [1] 
947
April 10
Hugo van Arles count of Arles/king of Italy, dies. [1] 
953
April 21
Otto I the Great gives Utrecht fishing rights. [1] 
955
May 16
Alberich II, illegitimate son of Octavianus elected pope. [1] 
956
February 17
Hugo the Great earl of Paris/duke of Francia, dies at about age 55. [1] 
961
May 26
German King Otto II crowned. [1] 
962
January 1
Boudouin III count of Flanders, dies. [1]February 2
Pope John XII crowns German King Otto I the Great Emperor. [1] 
963
March 15
Romanus II Byzantine emperor (959-63), dies at age 25. [1]December 6
Leo VIII elected Pope. [1] 
964
May 14
John XII [Octavianus] Pope (955-64), dies. [1] 
965
March 1
Leo VIII Italian (anti-)Pope (963-65), dies. [1]March 27
Arnulf I the Elder/the Great, count of Flanders (918-65), dies. [1] 
967
December 25
John XIII crowned Otto II the Red German compassionate emperor. [1] 
969
January 29
Peter tsar of Bulgaria (927-69), dies. [1]December 10
Nicephorus II Phocas Byzantine co-Emperor (963-69), murdered. [1]December 25
Johannes I Tzimisces, crowned emperor of Byzantium. [1] 
972
April 14
Notger becomes bishop of Liege. [1] 
973
January 14
Ekkehard I monk of Saint Gallen (Vita Waltharii manu fortis), dies. [1]January 19
Pope Benedictus VI elected. [1]May 7
Otto I the Great Holy Roman Emperor (962-973), dies at age 60. [1] 
974
April 25
Ratherius of Verona/Liege bishop/abbot, dies at about age 84. [1] 
975
December 27
Balderik bishop of Utrecht (918-75), dies. [1] 
976
January 10
John I Tzimisces co-emperor of Byzantium (969-76), dies at age 51. [1] 
978
March 18
Edward the Martyr, King of Anglo-Saxons (975-78)/st, murdered at age 15. [1]Saint Edward the Martyr king of Anglo-Saxons (975-78) dies. [1] 
979
April 14
Challenge to throne of King Aethelred II of England. [1]December 25
Rotardus appointed as bishop of the kingdom. [1] 
981
June 19
Death of Saint Adalbert von Magdeburg; established Christianity in Russia in 961, Bishop of Magdeburg. [37] 
983
December 7
Otto II the Red German king/emperor (973-83), dies at about age 28. [1] 
986
March 2
Lotharius King of France (954-86), dies at age 44. [1] 
987
May 21
Louis V last Carlovingians King of France (966-987), dies. [1]May 22
Louis V le Faineant the Lazy, king of France (986-87), poisoned at age 20. [1]December 30
French King Hugo Capet crowns his son Robert the compassionate king. [1] 
988
March 30
Arnulf II count of Flanders (965-988), dies. [1]Boudouin IV with the Beard becomes earl of Flanders. [1]May 6
Dirk II West Frisian count of Holland. [1]May 19
Dunstan[us] English archbishop of Canterbury, dies. [1](month unknown)
Prince Vladimir I of Kiev strikes first known Russian gold and silver coins. [1030.1060] 
989
April 13
Battle at Abydos: Byzantine emperor Basilius II beats Bardas Phocas. [1] 
990
January 1
Russia adopts Julian calendar. [1]April 23
Ekkehart II [Palatinus] monk to St-Gallen/poet, dies. [1] 
995
May 10
Boudouin bishop of Utrecht. [1] 
996
May 21
Pope Gregory V crowns his cousin Otto III German emperor. [1] 
997
April 23
Vojtech "Adalbert" of Prague second bishop of Prague/apostle, dies at age 40. [1] 
999
February 18
Gregory V [Bruno] first German Pope, dies. [1]April 2
Gerbert of Aurillac elected as first French Pope. [1]December 16
Adelheid the Saint German empress of Otto I/saint, dies at about age 68. [1]December 25
Heribertus becomes bishop of Cologne. [1] |