1180

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title: "1180" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["1180"] topic_path: "general/1180" source: "https://en.wikipedia.org/wiki/1180" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::callout[type=note] 1180 ::

::figure[src="https://upload.wikimedia.org/wikipedia/commons/3/31/Couronnement_de_Philippe_Auguste.jpg" caption="Philip II]] (1165–1223)"] ::

September 24 – Emperor Manuel I Komnenos dies in Constantinople after a 37-year reign. He is succeeded by his 11-year-old son, Alexios II Komnenos, who will reign briefly as emperor of the Byzantine Empire under the regency of his mother, Maria of Antioch. Maria assumes power as regent (until 1183) and takes as her advisor and lover, Alexios Komnenos (protosebastos), a nephew of Manuel I, which causes scandal and unrest among the Byzantine populace.

January 13 – Henry the Lion, Duke of Saxony and Bavaria, is stripped of his duchies and all his imperial fiefs at an Imperial Diet in Würzburg for violating the king's peace. On April 13, Emperor Frederick I Barbarossa issues the Gelnhausen Charter, formally dissolving Henry's former domains. A portion of Saxony is reorganized as the Duchy of Westphalia, while other territories are granted to his ally, Otto I the Redhead, Duke of Bavaria.
September 18 – King Louis VII (called the Younger) dies in Paris after a 43-year reign. He is succeeded by his 15-year-old son, Philip II, who becomes sole ruler of France and reigns until 1223.
Portuguese admiral defeats the Almohad fleet for the second time in two years.
The assembly traditionally considered the first Sejm of the Kingdom of Poland is convened at Łęczyca (approximate date).

The town of Portsmouth is founded by the Norman merchant Jean de Gisors, who establishes it as a strategic port to facilitate trade between England and France (approximate date).

Summer – King Baldwin IV (known as "the Leper") sends envoys to Saladin proposing a peace treaty. Due to a severe drought, much of Syria is afflicted by famine, prompting Saladin to agree to a two-year truce. Although Raymond of Tripoli initially denounces the agreement, he is forced to accept it following an Ayyubid naval raid on the port city of Tartus.
Saladin intervenes in a conflict between the Zengids of Mosul and the Artuqids. He persuades the Seljuk sultanate of Rum not to become involved and proceeds to raid Cilician Armenia.
Baldwin IV arranges the marriage of his sister, Sibylla, to Guy of Lusignan, brother of the constable Amalric of Lusignan. Baldwin grants Guy the County of Jaffa and Ascalon as a fief.

March 18 – Emperor Takakura is forced to abdicate by Taira no Kiyomori after a 12-year reign. He is succeeded by his two-year-old son, Emperor Antoku, who will reign until 1185. Kiyomori assumes control of the government, ruling as regent in the child emperor's name.
Genpei War: Prince Mochihito launches a rebellion against the ruling Taira clan. In support of the uprising, Minamoto no Yorimasa issues a call to arms, appealing to several Buddhist monasteries—such as Enryaku-ji, Mii-dera, and others—that have been alienated by Kiyomori.
June 20 – Battle of Uji: Prince Mochihito and Minamoto no Yorimasa take refuge in the Byōdō-in Temple. They appeal to warrior monks for assistance, but are ultimately defeated by Taira forces. Yorimasa commits suicide, and Mochihito is killed while fleeing.
September 14 – Battle of Ishibashiyama: A Taira force of approximately 3,000 men, led by Ōba Kagechika, defeats Minamoto no Yoritomo near Mount Fuji (in present-day Odawara). Yoritomo narrowly escapes by sea and flees to Awa Province.
November 9 – Battle of Fujigawa: Minamoto forces, numbering around 30,000 and commanded by Minamoto no Yoritomo, defeat a Taira army under Taira no Koremori near the Fuji River. The Taira forces retreat in disorder, though Koremori manages to escape.

Alexander Neckam becomes a lecturer in Paris and begins writing De Natura Rerum, one of the earliest Western European works to mention chess (approximate date).

Hangzhou, the capital of the Southern Song dynasty in China, becomes the largest city in the world, surpassing Fez in the Almohad Caliphate.

January 23 – Eberhard I, count of Berg-Altena (b. 1140)
January 29 – Soběslav II, duke of Bohemia (b. 1128)
February 6 – Teresa Fernández de Traba, queen of León
March 27 – Al-Mustadi, caliph of the Abbasid Caliphate (b. 1142)
June 20
- Minamoto no Yorimasa, Japanese military leader (b. 1106)
- Mochihito, Japanese prince and son of Go-Shirakawa
June 27 – Turan-Shah, Ayyubid emir (prince) of Damascus
July 1 – Stephanie (the Unfortunate), Spanish noblewoman
August 11 – William of Sens (or Guillaume), French architect
September 18 – Louis VII (the Younger), king of France (b. 1120)
September 24 – Manuel I (Komnenos), Byzantine emperor (b. 1118)
October 6 – Amalric of Nesle, French prelate and Latin patriarch
October 25 – John of Salisbury, English philosopher and bishop
November 14 – Lorcán Ua Tuathail, Irish archbishop (b. 1128)
Abraham ibn Daud, Spanish-Jewish philosopher (b. 1110)
Abū Ṭāhir al-Silafī, Fatimid scholar and writer (b. 1079)
John Tzetzes, Byzantine poet and grammarian (b. 1110)
Joscelin of Louvain, Flemish nobleman (b. 1121)
Raynerius of Split, Italian monk and archbishop
Zhu Shuzhen, Chinese poet and writer (b. 1135)

Runciman, Steven (1952). ''A History of the Crusades, Vol. II: The Kingdom of Jerusalem'', pp. 347–348. {{ISBN. 978-0-241-29876-3.
Picard, Christophe. (1997). "La mer et les musulmans d'Occident VIIIe–XIIIe siècle". Presses Universitaires de France.
Steven Runciman (1952). ''A History of the Crusades, Volume II: The Kingdom of Jerusalem'', p. 343. {{ISBN. 978-0-241-29876-3.
David Nicolle (2011). ''Saladin''. Osprey Publishing: Command Series 12, p. 24. {{ISBN. 978-1-84908-317-1.
Steven Runciman (1952). ''A History of the Crusades, Volume II: The Kingdom of Jerusalem'', p. 346. {{ISBN. 978-0-241-29876-3.
Sansom, George. (1958). "A History of Japan to 1334". Stanford University Press.
Turnbull, Stephen. (1998). "The Samurai Sourcebook". Cassell & Co..
Turnbull, Stephen. (1977). "The Samurai: A Military History". MacMillan Publishing Co., Inc..
"World's Largest Cities Through History".

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