1121 CE
Petronilla of Lorraine becomes regent of Holland (Low Countries) after her husband, Floris II ("the Fat") dies. He is succeeded by his 6-year-old son Dirk VI (Theodoric). Antipope Gregory VIII (supported by Emperor Henry V) is arrested by papal troops at Sutri. He is taken to Rome and imprisoned in the Septizonium. (Christmas Day) – The Praemonstratensian Order (Norbertines) is formed, when a group of canons make solemn vows at Prémontré.
In the 1120s, the 12th century.
Conflict & Security
- Emperor Emperor Huizong of Song sends an expedition to crush the rebellion at Hangzhou (modern-day Zhejiang) in China. The rebels are defeated and their leader Fang La is captured and executed.source
- The much larger Seljuk army is heavily defeated; Georgia is unified and independence is achieved from Muslim authority. King David IV lays siege and captures Tbilisi later in the year assigning it as his capital.source
- Emperor John II Komnenos recovers southwestern Anatolia (modern Turkey) from the Seljuk Turks and then hastens to the Balkans, where the Pechenegs are continuing their incursions. He transfers Byzantine troops to the Danube frontier at Paristrion.source
- Summer – Seljuk forces under Toghtekin make extensive raids into Galilee. King Baldwin II of Jerusalem, in reprisal, crosses the Jordan River with a Crusader army and ravages the countryside. He occupies and destroys a fortress that Toghtekin has built at Jerash.source
- Summer – Sultan Mahmud II of the Seljuk Empire declares a Holy War on the Kingdom of Georgia. He sends an expedition under Ilghazi, the Artukid ruler of Mardin, to invade the country.source
- A large rebellion takes place in Córdoba (modern Spain) against the ruling Almoravid dynasty.source
Religion & Belief
- April 22 – Antipope Gregory VIII (supported by Emperor Henry V) is arrested by papal troops at Sutri. He is taken to Rome and imprisoned in the Septizonium.source
- December 25 (Christmas Day) – The Praemonstratensian Order (Norbertines) is formed, when a group of canons make solemn vows at Prémontré.source
- The third and largest church is completed at Cluny Abbey (modern France).source
- Henry I founds Reading Abbey in England. The Cluniac Order populates the abbey.source
- Spring – Peter Abelard, a French theologian and philosopher, is condemned and charged with the heresy of Sabellius in a synod at Soissons. Abelard writes Sic et Non.source
- L'Aumône Abbey is founded by Count Theobald IV of Blois at Loir-et-Cher.source
Births
Deaths
- January 7 – Erminold, German Benedictine abbotsource
- January 18 – William of Champeaux, French philosophersource
- January 24 – Adeliza of Louvain, age 17, marries King Henry I of England two months after the accidental death of the heir to the English throne, Henry's only legitimate son, William Adelin.source
- February 10 – Domnall Ua Lochlainn, Irish king (born 1048)source
- March 2 – Floris II ("the Fat"), count of Holland (born 1085)source
- March 2 – Petronilla of Lorraine becomes regent of Holland (Low Countries) after her husband, Floris II ("the Fat") dies. He is succeeded by his 6-year-old son Dirk VI (Theodoric).source
- April 23 – Jón Ögmundsson, Icelandic bishop (born 1052)source
- August 7 – Ulrich I of Passau (or Udalrich), German bishopsource
- December 11 – Al-Afdal Shahanshah, Fatimid caliph (born 1066)source
- December 13 – Ulrich of Eppenstein, German abbotsource
- Zhou Tong, Chinese archery teacher and martial artistsource
- Masud Sa'd Salman, Persian poet (approximate date)source
- Zhou Bangyan, Chinese bureaucrat and ci poet (born 1056)source
- Fang La, Chinese rebel leader (executed in Kaifeng)source
- Muireadhach Ua Flaithbheartaigh, King of Iar Connacht.Irelandsource