Summer – Norman forces led by Duke Robert Guiscard and his brother Roger I invade Sicily. They land unseen during the night and surprise the Saracen army. Guiscard conquers Messina and marches into central Sicily.
Spring – Coup of Kaiserswerth: The 11-year-old King Henry IV is abducted, as a result of a conspiracy of German nobles led by Anno II, archbishop of Cologne. Henry's education and training is supervised by Anno, who acts as his regent and is called his magister (his "master" or "teacher"). Empress Agnes of Poitou (Henry's mother) resigns the throne, and Anno with the archbishops Siegfried I and Adalbert of Hamburg takes her place.[19]
Summer – King Ferdinand I (the Great) conquers more territory in modern-day Portugal and captures Coimbra. He appoints Sisnando Davides to reorganise the economy and administer the lands encircling the city.
Duke William I (the Bastard) demands the release of Harold Godwinson from Guy I (after a ransom being paid). Harold must swear an oath to aid William to the throne of England.
Kings Harald Hardrada of Norway and Sweyn II of Denmark agree to a peace agreement. Harald turns his attentions to England where he believes he has a right to the throne.
Chinese imperial official Sima Guang presents the emperor with an eight-volume Tongzhi (通志; "Comprehensive Records"), chronicling Chinese history from 403 BCE to the end of the Qin dynasty in 207 BCE. The emperor then issues an edict for the compilation of Guang's universal history of China, allocating funds for the costs of compilation and research assistants such as Liu Ban, Liu Shu and Fan Zuyu.[33]
The Abu Hanifa Mosque is established in Baghdad, when the Grand Vizier of the Seljuk Empire, Abu Saad al-Khwarizmi or al-Mustawfi, builds a shrine for Abu Hanifa near his tomb.[34]
December 30 – Granada massacre: A Muslim mob storms the royal palace in Granada, crucifies the Jewish vizier Yusuf ibn Naghrela, and massacres most of the Jewish population.[36]
January 6 – Harold Godwinson (Harold II) is crowned king of England, probably in the new Westminster Abbey, where Edward the Confessor's funeral took place not long before the coronation.[40]
October 6 – Harold II marches south from Stamford Bridge (near York) to counter the threat of the invasion by William. Reaching London within five days, he leaves a short time later. After a two-day march he and his army reach Caldbec Hill.
October 14 – Battle of Hastings: William and Harold II meet in battle at Hastings. Although Harold has the superior position on the battlefield, he is defeated and killed by William, invading England.
October 15 – Edgar Ætheling is proclaimed king of England (but is never crowned). He is soon forced to submit to the rule of William the Conqueror.
December – William the Conqueror moves along the south coast to Dover, and builds fortifications in the existing castle at the top of the cliffs. He moves to Canterbury and finally enters London. Archbishop Stigand and other English leaders submit to William's rule. On December 25, he is crowned as King William I of England in Westminster Abbey over Edward the Confessor's grave.
Eric and Eric, two pretenders to the Swedish throne, are both killed during the struggle for power in Sweden. Halsten, son of the late King Stenkil, becomes the new ruler.
Odo of Bayeux, a half-brother of William I, is appointed Earl of Kent and becomes William's deputy (or de facto regent) in England. His wealth and land become considerable.
Winter – William I marches on Exeter, which he besieges. The city holds out for 18 days, and after its fall William builds Rougemont Castle there to secure the region.
Winchester Castle in Hampshire is founded by William I; it is later one of the seats of government of the Norman kings ruling England.[45]
Autumn – Romanos IV begins a campaign against the Seljuk Turks, leading a Byzantine expeditionary force (which is in poor condition). He is successful in recapturing the fortress city of Hieropolis (modern-day Manbij) near Aleppo in northern Syria.[48]
Winter – Romanos IV leaves a portion of his army as a rearguard at Melitene. The Byzantine garrison fails to check a Seljuk raid that manages to sack Amorium (penetrating deep in Byzantine territory). Romanos winters near Aleppo before returning to Constantinople.[49]
Kiev Uprising: The city of Kiev rebels against Iziaslav I, in the aftermath of the Kievan Rus' defeat against the Cumans.
Rethra destruction: In Annals of Augsburg the slavic city is mentioned for the last time under the year 1068. It was captured by bishop Burchard, who destroyed their temple and abducted the sacred white horse living there.[50]
Spring – Emperor Yi Zong of the Western Xia (or Xi Xia) dies after a 19-year reign. He is succeeded by his 7-year-old son Hui Zong, who assumes the throne (until 1086).
May 22 – Emperor Go-Reizei dies after a 23-year reign, leaving no direct heirs to the throne. He is succeeded by his brother Go-Sanjō as the 71st emperor of Japan.
Seljuk forces under Alp Arslan defeat the Byzantine rear guard and advance deep into Cappadocia and Lycaonia. They plunder at will, but fail to capture the city of Iconium. Romanos retreats and returns to Constantinople. Alp Arslan takes advantage of Romanos' retreat and captures Manzikert. He recaptures the strategical fortress cities of Chliat and Van, consolidating his control over the Lake Van region.[52]
Spring – Romanos IV sends a Byzantine fleet (supported with an army) to relieve the siege of Bari. The Normans under Robert Guiscard defeat the Byzantines, and occupy the cities of Gravina and Obbiano in Apulia.
King Sweyn II of Denmark lands a fleet in the Humber in support of the Northumbrian rebels and they join him to burn York, attacking its two castles and destroying the old Minster.[53]
Winter of 1069–1070 – Harrying of the North: King William the Conqueror quells rebellions made by his English subjects against his rule, campaigning through the north of England with his forces, burning houses, crops, cattle and land from York to Durham, resulting in the deaths of over 100,000 people, mainly from starvation and winter cold.[54]
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