* 1121 – Battle of Didgori: the Georgian army under King David IV wins a decisive victory over the famous Seljuk commander Ilghazi.

* Ulrich of Eppenstein ( 1077 – 1121 )

* Manegold of Mammern ( 1121 – 1133 )

* Heinrich von Twiel ( 1121 – 1122 ) Anti-Abbot

* March 13 – Mieszko III, king of Poland ( b. c. 1121 )

William the Aetheling having perished in the wreck of the White Ship ( 25 November 1120 ), Fulk, on his return from a pilgrimage to the Holy Land ( 1120 – 1121 ), married his second daughter Sibyl, at the instigation of Louis VI, to William Clito, son of Robert Curthose, and a claimant to the duchy of Normandy, giving her Maine for a dowry ( 1122 or 1123 ).

* 1121 – Al-Khazini publishes The Book of the Balance of Wisdom, in which he invents a hydrostatic balance for measuring specific gravity, and proposes that the gravity and gravitational potential energy of a body vary depending on its distance from the centre of the Earth.

In the years 1121 – 1122 Pomerania became a Polish fief and a local strongman, Prince Wartislaw I swore feudal allegiance to the Polish monarch and undertook to pay a yearly tribute of 500 marks of silver to Poland ( One mark of silver was equal to 240 denarii.

In 1119 – 1121 John defeated the Seljuq Turks, establishing his control over southwestern Anatolia.

**# Henry ( 1121 – 75 ), archbishop of Reims

* Alfonso ( b. 1120 / 1121 – d. 10 October 1144 ), Prince of Capua ( from 1135 ) and Duke of Naples ;

164 ( 11 ): 1121 – 1123.

Adeliza of Louvain, sometimes known in England as Adelicia of Louvain, also called Adela and Aleidis ; ( c. 1103 – 23 April 1151 ) was queen consort of the Kingdom of England from 1121 to 1135, the second wife of Henry I.

** Third son: Imperial Prince Koreaki ( 惟明親王 ) ( 1172 – 1121 ), later Imperial Prince and Monk Shōen ( 聖円入道親王 )

* William of Champeaux ( 1070 – 1121 ), French philosopher and theologian

* Alpheus: A river associated with Olympia, home of The Olympic Games – a breathless, gasping runner is said to be breathing it ( line 1121 ).

* P. 1121 – a Hawker project

| width = auto | Floris IIthe Fat1091 – 1121

In the winter of 1120 – 1121 the Georgian troops successfully attacked the Seljuk settlements on the eastern and southwestern approaches to the Transcaucasus.

In 1121, Sultan Mahmud b. Muhammad ( 1118 – 1131 ) declared a holy war on Georgia and rallied a large coalition of Muslim states led by the Artuqid Najm al-din El-ğazi and Toğrul b. Muhammad.

Guillaume de Champeaux ( c. 1070 – 18 January 1121 in Châlons-en-Champagne ), also known as William of Champeaux ( English ) or Guglielmus de Campellis ( Latin ), was a French philosopher and theologian.

* 1121 – Al-Khazini: variation of gravitation and gravitational potential energy at a distance ; the decrease of air density with altitude

* 1121 – Al-Khazini makes extensive use of the experimental method to prove his theories on mechanics in The Book of the Balance of Wisdom

* Hugh le Roux ( 1121 – 1171 )

In 1118, Louis VI sent Suger to the court of Pope Gelasius II at Maguelonne ( at Montpellier, Gulf of Lyon ), and he lived from 1121 to 1122 at the court of Gelasius's successor, Calixtus II.

* William VI of Montpellier 1121 – 1149

The town was first mentioned in the records in 1121 in connexion with Count Adalbert of Haimar who had moved here from the region near Hildesheim and henceforth was titled the Count of Wernigerode.

rect 645 1074 736 1121 John, Count of Chalon

Ulrich I, Count of Höfft ( 1092 – 1121 ), who was for a time driven from his see by Emperor Henry IV, furthered monastic reforms and the Crusades.

Reginmar ( 1121 – 38 ), Reginbert, Count of Hegenau ( 1136 – 47 ) who took part in the crusade of Conrad III, and Conrad of Austria ( 1149 – 64 ), a brother of Bishop Otto of Freising, were all much interested in the foundation of new monasteries and the reform for those already existing.

Floris II, Count of Holland ( or Floris the Fat ) ( reigned 1091 – March 2, 1121 ) was the first from the native dynasty of Holland to be called Count of Holland.

Three years afterwards, under Yusuf's son and successor, Ali ibn Yusuf, Sintra and Santarém were added, and Iberia was again invaded in 1119 and 1121, but the tide had turned, the French having assisted the Aragonese to recover Zaragoza.

In 1118, Trois-Fontaines Abbey was founded in the diocese of Châlons ; in 1119, Fontenay Abbey in the Diocese of Autun and in 1121, Foigny Abbey near Vervins, in the diocese of Laon.

Following efforts by Lamberto Scannabecchi ( later Pope Honorius II ) and the Diet of Würzburg ( 1121 ) in 1122, Pope Calixtus II and Holy Roman Emperor Henry V entered into an agreement that effectively ended the Investiture Controversy.

Her parents almost certainly married in 1121.

After much political and military intrigue in Rome and the southern Italian states, Gregory VIII was formally deposed and Callistus II was generally recognized as the legitimate Pope in 1121.

Initial negotiations were conducted in October, 1121, at Wurzburg.

* 1116 / 1121: Bolesław III reunited Pomerelia with Poland.

On 29 January 1121 he married Adeliza, daughter of Godfrey I of Leuven, Duke of Lower Lotharingia and Landgrave of Brabant, but there were no children from this marriage.

Current provisions are contained in Title 10, United States Code 1121.

Around 1121, Pierre Abélard, a Benedictine monk at Saint Denis Basilica, turned his attention to the story of their patron saint, and disentangled the three different Dionysiuses.

An embassy of three cardinals was sent by Calixtus II to Germany, and negotiations for a permanent settlement of the investiture struggle were begun in October 1121 at Würzburg, where it was agreed that a general truce should be proclaimed in Germany, that the Church should have free use of its possessions, and that the lands of those in rebellion should be restored.

In Bullock v. United States, 763 F. 2d 1115, 1121 ( 10th Cir.

* 1121: On August 12, in the Battle of Didgori, the greatest military victory of Georgia, King David the Builder with 40, 000 Georgians, 15, 000 Kipchak auxiliaries, 500 Alan mercenaries and 300 French Crusaders defeats a Seljuk-led Muslim coalition army of 400, 000.

* 1121: On December 25, St. Norbert and 29 companions made their solemn vows, the beginning of the Premonstratensian Order.

Year 1121 ( MCXXI ) was a common year starting on Saturday ( link will display the full calendar ) of the Julian calendar.

am: 1121 እ. ኤ. አ.