Chinese and Japanese astronomers observe what has since come to be understood as supernovaSN 1181. One of only eight supernovae in the Milky Way observed in recorded history, it appears in the constellationCassiopeia, and is visible in the night sky for about 185 days. The radio source 3C58 is thought to be the remnant from this event.
Guilhem VIII, lord of Montpellier in France, frees the teaching of medicine from any monopoly. (January).
The warlord Ali b. Ghaniya and his brother Yahya seize by surprise the Almohad-dominated cities of Constantine, Béjaïa and Algiers. While they are away from their base in Mallorca, one of their brothers, Muhammad, takes control of the island and calls in the Almohads, whom intend to capture Mallorca for themselves. The Banu Ghaniya reenforcement arrives just in time from Africa, to defeat the Almohads and reassert their domination of the island.
The Almohads reconquer the Alentejo (except for Évora), and besiege Lisbon on land and blockade the port with their navy. A Portuguese soldier manages to swim to the largest ship of the fleet, and to sink it. This ship was so tall, it would have allowed the Muslims to easily reach the walls of the city. The next day, the Almohads have to retreat, taking with them a number of civilian captives. The Almohad army continues its campaign by the siege of Santarém, where the caliph, Abu Yaqub Yusuf is killed.
The city of Abbeville receives its commercial charter.
Henry II of England knights his heir John of England, and sends him to Ireland to enforce English control. According to Gerald of Wales, the only witness to chronicle the expedition, it is a disaster in which money is wasted on alcohol, and the Irish chieftains are scorned into uniting against a common enemy. By the end of the year, John has returned to England in defeat. Nonetheless, Henry gets him named King of Ireland by Pope Urban III, and procures a golden crown with peacock feathers.
After the death of the child-king Baldwin V, his mother succeeds him as Sibylla of Jerusalem, and appoints her disfavoured husband Guy de Lusignan king consort. This comes as a shock to Jerusalem's court, who had earlier forced the possible future Queen into promising that should she become so, she would not appoint him the title.
To finance the siege of Zara, the Doge of Venice grants the benefits of the revenue from the salt tax to a consortium of creditors. Pledging the income from the Salt Office becomes a staple of the city's finance.
August 29 – Ban Kulin writes The Charter of Kulin, which becomes a symbolic "birth certificate" of Bosnian language and statehood.
Henry II of England ends a war against Philip II of France & Richard, by agreeing to their terms: he pays Philip 20,000 marks, and recognizes Richard as the heir to the English throne. Henry is brokenhearted to find that his second heir, John, had also allied against him in the war. He dies within a few months.
^Das, Deb K. (22 November 2000). "1300 YEARS of Cricket: 700 to 2000 AD". ESPNcricinfo. Retrieved 26 June 2019. Joseph of Exeter, in 1183, gives the first complete description of this co-ed community activity. A ball is thrown at (and hit by) a batter wielding a staff which looks like today's baseball bat...the batter protects a piece of wood, perhaps a log or tree-stump, resting on a gate-like stand(could this be the origin of the term "stumps" in modern cricket?)...fielders are positioned all around, squires in front of the "wicket" and serfs behind...... This sport has clearly been going on for some time, and Joseph of Exeter calls it a "merrye" weekend recreation.
^Edbury, Peter W. (1978). "The 'Cartulaire de Manosque': a Grant to the Templars in Latin Syria and a Charter of King Hugh I of Cyprus1". Historical Research. 51 (124): 174–181. doi:10.1111/j.1468-2281.1978.tb01877.x. ISSN1468-2281. Joscius was already arch-bishop of Tyre in October 1186, and he died at an unknown date between October 1200 and May 1202
^Lakshmipriya, T. (2008). "Conservation and Restoration of the Ta Prohm Temple". In D'Ayala, Dina; Fodde, Enrico (eds.). Structural Analysis of Historic Construction: Preserving Safety and Significance, Two Volume Set: Proceedings of the VI International Conference on Structural Analysis of Historic Construction, SAHC08, 2-4 July 2008, Bath, United Kingdom. Boa Raton, London, New York, Leiden: CRC Press. p. 1491. ISBN9781439828229.
^Welch, David J. (March 1989). "Late Prehistoric and Early Historic Exchange Patterns in the Phimai Region, Thailand". Journal of Southeast Asian Studies. 20 (1): 11–26. doi:10.1017/S0022463400019810. ISSN1474-0680. The foundation stela at Ta Prohm (AD 1186) recorded the assignment of 3,140 settlements with nearly 80,000 persons to this shrine,
^Stanley, Lane-Poole (July 1898). "The Fight That Lost Jerusalem". The Cornhill Magazine. 5 (25): 64. The child-king, Baldwin V., was dead, and an intrigue had enthroned Sibylla, a daughter of the royal house of Jerusalem, and she had shared her crown with her husband, Guy of Lusignan
^Riddell, Scott J.; Erlendsson, Egill; Eddudóttir, Sigrún D.; Gísladóttir, Guðrún; Kristjánsdóttir, Steinunn (2018-10-10). "Pollen, Plague & Protestants: The Medieval Monastery of Þingeyrar (Þingeyraklaustur) in Northern Iceland". Environmental Archaeology. 0: 1–18. doi:10.1080/14614103.2018.1531191. ISSN1461-4103. Kirkjubæjarklaustur (AD 1186–1542)
^Júlíusson, Árni Daníel; Lárusdottir, Birna; Lucas, Gavin; Pálsson, Gísli (2019-06-07). "Episcopal Economics". Scandinavian Journal of History. 0: 1–26. doi:10.1080/03468755.2019.1625436. ISSN0346-8755. The nunnery of Kirkjubæjarklaustur in Southeast Iceland was, according to received scholarship, one of the oldest monasteries in Iceland, established in 1186