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The 1080s was a decade of the Julian Calendar which began on January 1, 1080, and ended on December 31, 1089.
- 1 Events
- 1.1 1080
- 1.2 1081
- 1.3 1082
- 1.4 1083
- 1.5 1084
- 1.6 1085
- 1.7 1086
- 1.8 1087
- 1.9 1088
- 1.10 1089
- 2 Significant people
- 3 Births
- 4 Deaths
- 5 References
- April 17 – Canute IV succeeds as King of Denmark, on the death of his brother Harald III.
- May 14 – William Walcher, Bishop of Durham, is killed by rebel Northumbrians. To punish the rebels, King William I of England sends his half-brother Odo of Bayeux to pacify Northumbria.
- July 5 – Ísleifur Gissurarson, the first bishop in Iceland, dies while giving mass in Skálholt Church.
- Autumn – King William I of England's son Robert Curthose is sent to invade Scotland; he reaches as far as Falkirk.
- October 14 – Battle on the Elster between the armies of the two rival brothers-in-law kings of the German states, Henry IV, King of the Romans and Rudolf of Rheinfelden meeting at the White Elster river in the Great Saxon Revolt civil war of the Holy Roman Empire. Rudolf is the victor but dies the following day at Merseburg of wounds received.
- King William I of England, in a letter, refuses to accept Pope Gregory VII as his overlord.
- King Alfonso VI of León and Castile establishes Latin liturgy in the Catholic Church, in place of the Mozarabic Rite.
- Osmund (bishop of Salisbury) builds Devizes Castle, in England.
- c. 1080–1100 – The Master of Daphni creates the mosaic of Christ Pantocrator in the central dome of the katholikon, at Daphni Monastery in Greece.
- The Rubenid Principality of Cilicia gains independence after its founder, Ruben I, Prince of Armenia, succeeds in establishing his authority in the mountainous regions of Cilicia (approximate date).
- The Seljuq-led Turkish tribes begin the Great Turkish Invasion of the Kingdom of Georgia.
- The Song Dynasty Chinese polymath scientist and statesman Shen Kuo begins his defensive military campaign against the Tangut people of the Western Xia Kingdom, successfully defending the invasion route to Yan'an.
- April 1 – Byzantine emperor Nikephoros III Botaneiates is overthrown by Alexios I Komnenos, who is crowned on April 5, ending the Middle Byzantine period, and beginning the Comnenan Dynasty.
- May 8 – Alfonso VI of Castile marries Constance of Burgundy.
- October 18 – Byzantine–Norman wars: Battle of Dyrrhachium: Alexios I helps defend Albania from the Normans (the first recorded mention of Albania), but is defeated by Robert Guiscard, Norman Duke of Apulia and Calabria, outside the city of Dyrrhachium (Durrës), the Byzantine capital of Illyria. The Normans govern Albania from southern Italy until around 1100.
- Corfu is taken from the Byzantine Empire by Robert Guiscard.
- Turkish emir Tzachas conquers İzmir, and founds a short-lived principality, which emerges as the first sea power in Turkish history.
- Battle of Mynydd Carn (near St. David's in Wales): Gruffudd ap Cynan, in alliance with Rhys ap Tewdwr, (prince of Deheubarth) defeats the forces of Trahaearn ap Caradog, Caradog ap Gruffydd and Meilir ap Rhiwallon (who are all killed), allowing Gruffudd to claim the Kingdom of Gwynedd.
- Construction begins on St. Canute's Cathedral in Odense, Denmark.
- Construction of the Rochester Cathedral is completed in England.
- Henry IV, Holy Roman Emperor besieges Rome and gains entry; a synod is agreed upon by the Romans, to rule on the dispute between Henry and Pope Gregory VII.
- Ottokar II succeeds his brother Adalbero (died 1086 or 1087), as margrave of Styria.
- The Korean printing of the entire Buddhist Tripitaka is completed.
- A military campaign advised by Song Dynasty statesman Shen Kuo fails.
- The first mention of the German town of Hofgeismar is recorded.
- Sancho I of Aragon conquers Graus.
- Alfonso VI of Castile conquers Talavera de la Reina.
- Duklja conquers Bosnia.
- June – Henry IV, Holy Roman Emperor besieges Pope Gregory VII in Castel Sant'Angelo.
- Saint Bruno founds the Carthusian Order of monks.
- Kyanzittha begins his reign in Burma.
- Henry IV, Holy Roman Emperor is crowned Emperor by Antipope Clement III.
- Rome is besieged by Holy Roman Emperor Henry IV, and is then sacked by the Normans of Robert Guiscard, who intended to restore papal authority over the city.
- Pope Gregory VII, who had been imprisoned by Henry IV at the Castel Sant'Angelo, Rome, is freed by Robert Guiscard.
- During the struggle for power in Sweden, King Halsten is killed and his brother Inge the Elder is deposed in Svealand, only ruling Götaland for the next three years. The Svears take Blot-Sweyn as their king.
- Antioch is captured by the Seljuk Turks from the Byzantines.
- Chancellor Sima Guang and a group of scholars of the Chinese Song Dynasty complete the compilation of the Zizhi Tongjian, an enormous written universal history of China, in 294 volumes of 3 million written Chinese characters.
- April 2 – Emperor Zhezong becomes emperor of Song Dynasty. Empress Dowager Gao cancels all the reform packages, and dismisses pro-reform Wang Anshi.
- May 25 – Alfonso VI of Castile enters the Islamic city of Toledo, Spain, and invites French knights to settle the central plateau of Spain.
- The Domesday survey is commissioned by William I of England, apparently prompted by the abortive invasion of Canute IV of Denmark, to ensure proper taxation and levies.
- Henry IV extends the "Peace of God" over his entire empire.
- Katedralskolan in Lund, the oldest school in Scandinavia, is founded.
- Vratislav, Duke of Bohemia, is crowned King.
- By this year, the annual output of copper currency for the Chinese Song Dynasty reaches 6 billion coins a year, prompting the Chinese government to adopt the world's first paper-printed money later in the 1120s.
- Emperor Shirakawa of Japan starts his cloistered rule.
- The Imam Ali Mosque in Najaf is rebuilt by the Seljuk Malik Shah I, after being destroyed by fire.
- October 23 – Battle of Sagrajas: Alfonso VI of León and Castile is defeated by the Almoravids, who had been called into Spain by Abbad III of Sevilla.
- The Domesday Book is completed in England.
- Syracuse, the last Muslim stronghold in Sicily, is conquered by the Normans.
- May 24 – Pope Victor III succeeds Pope Gregory VII as the 158th pope, though he does not accept election until May 9, 1087.
- Mahdia campaign: The navies of Genoa and Pisa take the capital of the Zirids, and occupy it for a year. Subsequently, both republics obtain trading privileges.
- Emperor Horikawa ascends to the throne of Japan.
- The formal reign of Emperor Shirakawa, but not his cloistered rule, ends.
- May 9 – Pope Victor III formally accepts elevation, as the 158th pope.
- May 9 – The remains of Saint Nicholas are brought to Bari, Italy by local sailors.
- September 9 – William the Conqueror dies two months after his fall from a horse, and is succeeded by his son, William II becomes King of England.
- Inge the Elder returns to Svealand, kills Blot-Sweyn, and again proclaims himself King of Sweden.
- A fire in London, England destroys much of the city, including St Paul's Cathedral.
- The Sharq al-Andalus falls under the domination of El Cid, supported by the malik of Tortosa.
- A rebellion in England, against King William II, is led by Odo of Bayeux.
- The 6.5 Ms Tmogvi earthquake affects the Kingdom of Georgia, causing severe damage and many deaths.
- Almoravid campaign in al-Andalus: Yusuf ibn Tashfin besieges Aledo, but is forced to retreat, by the arrival on the scene of the troops of King Alfonso VI of León and Castile.
- The troops of the count of Barcelona reconquer the ancient archiepiscopal see of Tarragona (lost again in 1108). Berenguer de Lluçanés becomes the city's new archbishop.
Arts and culture
- The Dream Pool Essays is published in this year, by the polymath Chinese scientist and statesman Shen Kuo. His book represents the earliest known writing about the magnetic compass, movable type printing, experimentation with the camera obscura only decades after Ibn al-Haytham, and includes many different fields of study in essay and encyclopedic form, including geology, astronomy, botany, zoology, mineralogy, anatomy, pharmacology, geography, optics, economics, military strategy, philosophy, etc. Some of Shen's most advanced theories include geomorphology and gradual climate change, while he improves Chinese astronomy, by fixing the position of the pole star and correcting the lunar error, by plotting its orbital course every night for a continuum of five years. Shen's book is also the first to describe the drydock in China, and discusses the advantages of the relatively recent invention of the canal pound lock, over the old flash lock.
- The Chinese polymath statesman and scientist Su Song has the successful pilot model for his astronomical clock tower constructed in Kaifeng, China. It features an escapement mechanism, and the world's oldest known endless power-transmitting chain drive to operate the armillary sphere, opening doors, and mechanical-driven mannequins, that would rotate in shifts to announce the time on plaques.
- The oldest extant university, the University of Bologna, is founded.
- March 12 – Pope Urban II succeeds Pope Victor III, as the 159th pope.
- Work begins on the third and largest church at Cluny.
- Northumbria in England is divided by the Normans into the counties of Northumberland, County Palatine of Durham, Yorkshire, Westmorland and Lancashire.
- George II resigns the throne of Georgia in favor of his 16-year-old son, David IV.
- August 11 – A powerful earthquake is recorded in Britain.
- June 22 – Gaston IV of Bearn and the Frankish crusaders take the Aragonese city of Monzón, from the emir of Zaragoza.
- Cîteaux Abbey, the first Cistercian monastery, is founded in southern France.
- The Synod of Melfi (under Pope Urban II) issues decrees against simony and clerical marriage. Supposedly, this council declares that the concubines and illegitimate wives of these clerics are subject to slavery.
- Williams, Hywel (2005). Cassell's Chronology of World History. London: Weidenfeld & Nicolson. pp. 113–114. ISBN 0-304-35730-8.
- John France. Victory in the East (Book extract).
Godfrey was almost certainly present in support of Henry IV at the battle of Elster in 1080 (sic 1085... an error or typo), when the forces of the anti-king Rudolf triumphed on the field only to see their victory nullified because Rudolf was killed
- Picard C. (1997) La mer et les musulmans d'Occident au Moyen Age. Paris: Presses Universitaires de France.
- The Welsh Academy. Encyclopaedia of Wales.
- Picard C. (1997) La mer et les musulmans d'Occident au Moyen Age. Paris: Presses Universitaires de France.
- "Carthusian | religious order". Encyclopedia Britannica. Retrieved 8 August 2018.
- E, Harvey G. (2000). History of Burma. Asian Educational Services. p. 36. ISBN 9788120613652.
- "Henry IV | Holy Roman emperor". Encyclopedia Britannica. Retrieved 8 August 2018.
- "Domesday Book". www.nationalarchives.gov.uk. Retrieved 25 April 2018.
- "British History in depth: The Domesday Book". BBC - History. Retrieved 25 April 2018.
- Dobson, R. B. (2000). Encyclopedia of the Middle Ages. New York: Routledge. p. 1349. ISBN 1-57958-282-6.
- Gilbert Meynier (2010) L'Algérie cœur du Maghreb classique. De l'ouverture islamo-arabe au repli (658-1518). Paris: La Découverte; pp.56.
- Kleinhenz, Christopher (2010). Medieval Italy: an encyclopedia. New York: Routledge. p. 95. ISBN 0-415-93930-5.
- Gilbert Meynier (2010) L'Algérie cœur du Maghreb classique. De l'ouverture islamo-arabe au repli (658-1518). Paris: La Découverte; pp.83.
- Gilbert Meynier (2010) L'Algérie cœur du Maghreb classique. De l'ouverture islamo-arabe au repli (658–1518). Paris: La Découverte; pp.83.
- McGrank, Lawrence (1981). "Norman crusaders and the Catalan reconquest: Robert Burdet and te principality of Tarragona 1129–55". Journal of Medieval History. 7 (1): 67–82. doi:10.1016/0304-4181(81)90036-1.
- Canellas, Angel (1951). "Las Cruzadas de Aragon en el Siglo XI". Archived from the original on February 25, 2012. Retrieved February 22, 2012.
- Pope Bl. Urban II, Catholic Encyclopedia, http://www.newadvent.org/cathen/15210a.htm