1118

Events

* January 24 — Pope Gelasius II succeeds Pope Paschal II as the 161st pope.
* March 10 — Gregory VIII is elected antipope.
* June 11 - Roger of Salerno, Prince of Antioch, captures Azaz from the Seljuk Turks.
* June 29 — Vikram Chola becomes regent of the Chola kingdom.
* December 18 - Alfonso the Battler expels the Moors from Zaragoza.

Europe

* Þorlákur Runólfsson becomes Bishop of Skálholt.
* Enna mac Donnchada mac Murchada becomes King of Dublin.
* Cu Faifne mac Congalaig becomes King of Ui Failghe.
* Maelsechlainn Ua Faelain becomes King of the Déisi Muman.
* The cantrefs of Rhos and Rhufoniog are annexed by Gruffydd ap Cynan, King of Gwynedd.
* The Archbishop of York is no longer required to be crowned by the Archbishop of Canterbury.
* Reconstruction begins on Peterborough Cathedral, destroyed by fire in 1116.
* Ramon Berenguer III, Count of Barcelona captures Tarragona from the Moors.
* A rebellion against Henry I of England breaks out in Normandy.
* Alberich of Rheims becomes Master at the school of Rheims.
* Charles I, Count of Flanders marries Margaret of Clermont.
* Amaury IV of Montfort divorces his wife Richilde, daughter of Baldwin II, Count of Hainaut.
* Wulgrin III becomes Count of Angoulême.
* Gervais becomes Count of Rethel.
* Montlhéry Castle is dismantled by Louis VI of France.
* The cathedral of Ferentino is completed.
* The restoration of Santa Maria in Cosmedin begins.
* Magdeburg is almost destroyed by fire.
* Reichenbach Abbey is founded.
* Zwickau, Eisenstadt, Kirchgandern, and Wolfenbüttel are first mentioned.
* Otto of Bamberg is suspended by the Pope, and Norbert of Xanten defends himself against charges of heresy at the Synod of Fritzlar.
* Đorđe, Vojislavljevic´ ruler of Serbia, is overthrown by Uroš I of Raška.
* George of Duklja is overthrown by his cousin Grubeša.
* Radostl becomes Bishop of Krakow.
* Zbraslav, now part of Prague, is founded.
* Sylvestr becomes bishop of Pereyaslavl Yuzhniy.
* The Knights Templar are founded, with Hughes de Payens serving as the first Grand Master.

Asia

* John II Comnenus succeeds Alexius I as Byzantine emperor.
* The Byzantine general Philocales captures Sardis from the Seljuk Sultanate of Rûm.
* Baldwin I of Jerusalem invades Egypt.
* Baldwin of Le Bourg succeeds his cousin Baldwin I as king of Jerusalem.
* Roman of Le Puy becomes lord of Oultrejordain.
* Joscelin I succeeds Baldwin of Le Bourg as Count of Edessa.
* Garmond of Picquigny becomes Latin Patriarch of Jerusalem.
* Suleyman I ibn al-Ghazi becomes emir of Aleppo.
* David IV of Georgia captures Lorri from the Seljuk Turks.
* David IV of Georgia settles a number of Kipchaks in Georgia.
* Ahmed Sanjar and Mahmud II proclaim themselves rival Seljuk sultans upon the death of Mehmed I of Great Seljuk.
* Al-Mustarshid becomes Abbasid caliph.
* Bahram Shah becomes Ghaznavid Emperor.

* Battle of Kennagal: The Hoysala Empire defeats the Chalukya.
* The Zenghe era of Emperor Huizong of Song China ends, and the Chonghe era begins.
* The Yongning era of Emperor Chongzong of Western Xia ends.
* The Genei era begins in Japan.

Births

* November 28 — Manuel I Comnenus, Byzantine Emperor (d. 1180)
* December 21 — Thomas Becket, Archbishop of Canterbury (d. 1170)
* Gualdim Pais, Portuguese Grand-Master of the Templars (d. 1195)
* Eudes II, Duke of Burgundy
* Gertrude, daughter of Lothair III, Holy Roman Emperor and wife of Henry X, Duke of Bavaria
* Christina, daughter of Canute Lavard, wife of Magnus IV of Norway
* Andronicus I Comnenus, Byzantine Emperor (d. 1185)
* Nur ad-Din, ruler of Syria (d. 1174)
* Ahmed ar-Rifa'i, founder of the Rifa'i Sufi order
* Taira no Kiyomori, Japanese general (d. 1181)
* Saigyo, Japanese poet

Deaths

* January 21 — Pope Paschal II
* April 2 — King Baldwin I of Jerusalem
* April 16 — Adelaide del Vasto, regent of Sicily, mother of Roger II of Sicily, queen of Baldwin I of Jerusalem
* May 1 — Edith of Scotland, queen of Henry I of England
* June 5 — Robert de Beaumont, 1st Earl of Leicester
* July 7 — Florence of Worcester, long thought to be the author of the chronicle of John of Worcester
* August 15 — Alexius I Comnenus, Byzantine Emperor (b. 1048)
* Gissur Ísleifsson, Bishop of Skálholt
* Muircheartach Ua Briain, High King of Ireland
* Domnall mac Muirchertaig ua Briain, King of Dublin
* Rogan mac Domnaill meic Conchobair, King of Ui Failghe
* Count William of Évreux
* William III, Count of Angoulême
* Lithuise of Blois
* Milo II, lord of Montlhéry
* Hugh I, Count of Rethel
* Gerberge I, Countess of Provence
* Philip Halsten, King of Sweden
* Maur, Bishop of Krakow
* Basil the Physician, Bogomil leader
* Arnulf of Chocques, Latin Patriarch of Jerusalem
* Mehmed I of Great Seljuk, Seljuk sultan
* Al-Mustazhir, Abbasid caliph
* Arslan Shah, Ghaznavid Emperor