World Timeline

AD 1123: Jurchen army occupied the southern capital of Khitan Empire (nowadays Běijīng; Khitan Empire had three capitals and they had already lost the other two before). The Khitan Emperor went missing. This is considered the end of Khitan Empire by some historians, however others think it would end in 1125 when its Emperor got captured and surrendered to the Jurchens.
 
AD 1124: December 21 – 1124 papal election: Lamberto Scannabecchi is elected Pope after Teobaldo Boccapecci is rejected. Scannabecchi takes the name Pope Honorius II.
 
AD 1125: Seeing the weakness of their neighbor on the south, Jurchen Empire attacked Sòng Dynasty in October. In a hurry, Emperor Huīzōng declared his abdication in December since he did not want to take the responsibility for defeat. His son Zhào Huán succeeded him as Emperor Qīnzōng of Sòng.
 
AD 1126: Adelard of Bath, an English philosopher, translates Muḥammad ibn Mūsā al-Khwārizmī's arithmetic and astronomical works into Latin.
 
AD 1127: Imad ad-Din Zengi, a Turkish military leader, becomes governor (atabeg) of Mosul. He seizes the cities of Nisibin, Sinjar and Harran in the Jazira Region (Northern Mesopotamia).
 
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AD 1129: April 14 – Following the Capetian tradition, King Louis VI (the Fat) has his eldest son Philip crowned as co-ruler of France at Rheims Cathedral. Louis himself becomes the national protector of all France.
 
Premise: AD 1127: The Jurchen Empire took the capital city of Sòng Dynasty and captured their emperor (and former emperor). Zhào Gòu, one of the sons of Emperor Huīzōng, escaped to the south and re-organized Sòng Dynasty's government. He was enthroned as Emperor Gāozōng of Sòng and his country was known as the "Southern Sòng Dynasty".

AD 1130: Battle of Huángtiāndàng – With only 8 thousand men and a hundred ships, Southern Sòng navy successfully stopped more than 100 thousand Jurchen soldiers from crossing the Yangtze River. This effectively prevented the Jurchen Empire from occupying the entirety of China and ensured Southern Sòng's continuation.
 
August 21 – King Baldwin II falls seriously ill, after his return from Antioch. He is moved to the patriarch's residence near the Holy Sepulchre, where he bequeaths the kingdom to his daughter Melisende, her husband Fulk and their infant son, Baldwin. He takes monastic vows, and dies soon after. Baldwin is buried in the Church of the Holy Sepulchre, at Jerusalem.AD 1131:
 
AD 1132: Malachy is appointed archbishop of Armagh, Ireland, to impose the Roman liturgy on the independent Irish Church.
 
AD 1133: Spring – A German expeditionary force, led by King Lothair III, marches into northern Italy, and arrives at Rome, after a 6-month journey across the Alps. Accompanied by Bernard of Clairvaux, French abbot and Doctor of the Church, Lothair is crowned by Pope Innocent II as Holy Roman Emperor at the Church of the Lateran, on June 4. He receives as papal fiefs the vast estates of Matilda, former margravine of Tuscany, which he secures for his daughter Gertrude of Süpplingenburg and her husband, Duke Henry X (the Proud) of Bavaria.
 
AD 1134: Count Hugh II (du Puiset), in alliance with the Egyptian city of Ascalon, revolts against King Fulk V of Jerusalem, attempting to take Jaffa. Hugh submits to Fulk and is exiled for three years. While awaiting for a boat to Italy he is attacked by a Breton knight, but survives the attempted murder. Hugh retires to the Sicilian court of his cousin, King Roger II, who appoints him to the lordship of Gargano, where he dies soon afterwards.
 
AD 1135: Caliph Al-Mustarshid is assassinated at Baghdad after a 17-year reign. He is succeeded by his son Al-Rashid Billah as ruler of the Abbasid Caliphate.
 
AD 1137: Byzantine Emperor John II Comnenus's army besieged the city of Antioch. Several days later Raymond of Poitiers, Prince of Antioch, surrendered and Antioch became a fief of the Byzantine Empire.
 
AD 1139: Southern Sòng Dynasty reached a peace agreement with the Jurchen Empire. However, some important generals like Yuè Fēi were against this agreement and would continue to fight against Jurchens despite their emperor's order.
 
AD 1140: Battle of Yancheng: Chinese forces under the command of Yue Fei defeat a numerically superior Jin army led by Wuzhu.
 
AD 1142: Abd al-Mu'min, ruler of the Almohad Caliphate, is unable to feed his population during a famine. He recognize the de facto protectorate of Roger II to support the commercial center of Mahdia.
 
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AD 1143: King of Léon and Castile Alfonso VII signed the Treaty of Zamora and acknowledged his cousin Afonso Henriques's title and the de facto independence of Portugal.
 
AD 1144: Siege of Edessa: Seljuk forces led by Imad al-Din Zengi conquer the fortress city of Edessa after a four-week siege.
 
AD 1146: Confucius was recognized as an emperor by the Western Xià Dynasty. Though Confucius was respected in Chinese history, this was the only time he got worshipped as an emperor.
 
AD 1149: Genoa grants the benefits of a part of the city's fiscal revenues to a consortium of creditors called compera, the first example of the consolidation of public debt in medieval Europe.
 
AD 1153: Estimation: Constantinople, capital of the Byzantine Empire, becomes the largest city of the world, taking the lead from Merv in the Seljuk Empire.
 
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AD 1154: December 3 – Pope Anastasius IV dies after a 17-month pontificate. He is succeeded by Adrian IV (the only English pope in history) as the 169th pope of the Catholic Church.
 
AD 1156: July – The Hōgen Disturbance broke out in Japan. Former emperor Sutoku wanted that his son take the throne, but the chief chief councillor supported Go-Shirakawa. The situation escalated into a coup d'état as a few hundred samurais supporting Go-Shirakawa attacked Sutoku's base and burned it down. Ultimately Sutoku was exiled to Sanuki and numerous people who supported Sutoku were executed.
 
AD 1157: Nur al-Din Zengi besieges the Knights Hospitaller in the crusader fortress of Banyas, routs a relief army led by King Baldwin III of Jerusalem, and takes Grand Master Bertrand de Blanquefort prisoner.
 
AD 1158: Welsh leader Ifor Bach snuck into Cardiff Castle and kidnapped the entire family of William Fitz Robert, Earl of Gloucester.
 
AD 1159: Taira no Kiyomori leaves Kyōto on a personal pilgrimage, giving Fujiwara no Nobuyori and his Minamoto allies the perfect chance to stage an uprising.
 
AD 1160: King of Sweden Erik IX Jedvardsson was assassinated by Magnus Henriksson, who proclaimed him self king later. Magnus would be assassainted too in the next year. Erik soon was worshipped as a saint.
 
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