1121

Quick facts

1121 in various calendars
Gregorian calendar	1121 MCXXI
Ab urbe condita	1874
Armenian calendar	570 ԹՎ ՇՀ
Assyrian calendar	5871
Balinese saka calendar	1042–1043
Bengali calendar	527–528
Berber calendar	2071
English Regnal year	21 Hen. 1 – 22 Hen. 1
Buddhist calendar	1665
Burmese calendar	483
Byzantine calendar	6629–6630
Chinese calendar	庚子年 (Metal Rat) 3818 or 3611 — to — 辛丑年 (Metal Ox) 3819 or 3612
Coptic calendar	837–838
Discordian calendar	2287
Ethiopian calendar	1113–1114
Hebrew calendar	4881–4882
Hindu calendars
- Vikram Samvat	1177–1178
- Shaka Samvat	1042–1043
- Kali Yuga	4221–4222
Holocene calendar	11121
Igbo calendar	121–122
Iranian calendar	499–500
Islamic calendar	514–515
Japanese calendar	Hōan 2 (保安２年)
Javanese calendar	1026–1027
Julian calendar	1121 MCXXI
Korean calendar	3454
Minguo calendar	791 before ROC 民前791年
Nanakshahi calendar	−347
Seleucid era	1432/1433 AG
Thai solar calendar	1663–1664
Tibetan calendar	ལྕགས་ཕོ་བྱི་བ་ལོ་ (male Iron-Rat) 1247 or 866 or 94 — to — ལྕགས་མོ་གླང་ལོ་ (female Iron-Ox) 1248 or 867 or 95

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Events

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.

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.^[1]

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).
A large rebellion takes place in Córdoba (modern Spain) against the ruling Almoravid dynasty.^[2]

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.

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.
August 12 – Battle of Didgori: King David IV ("the Builder") of Georgia with a Georgian army of 55,600 men) defeats the 300,000-strong Seljuk coalition forces at Mount Didgori.
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.

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.

Spring – Peter Abelard, a French theologian and philosopher, is condemned and charged with the heresy of Sabellius in a synod at Soissons.^[3] Abelard writes Sic et Non.
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.
December 25 (Christmas Day) – The Praemonstratensian Order (Norbertines) is formed, when a group of canons make solemn vows at Prémontré.^[4]
Henry I founds Reading Abbey in England. The Cluniac Order populates the abbey.
The third and largest church is completed at Cluny Abbey (modern France).^[5]
L'Aumône Abbey is founded by Count Theobald IV of Blois at Loir-et-Cher.^[6]