1064

Events

Summer - King Ferdinand I 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.
European warriors go to Spain, to participate in the siege of Barbastro. This expedition is sanctioned by Pope Alexander II – and is now regarded as an early form of Crusade.
Harold Godwinson, Earl of Wessex, is shipwrecked on the shores of Ponthieu. He is captured by Count Guy I who takes him as hostage to his castle of Beaurian.
Duke William I demands the release of Harold Godwinson from Guy I. 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.
Seljuk Empire
April 27 - Alp Arslan succeeds to the throne, as sultan of the Seljuk Empire. He becomes sole ruler of Persia from the river Oxus to the Tigris.
The Seljuk Turks under Alp Arslan invade Anatolia, and capture Ani after a siege of 25-days. He sacks the city and slaughters its citizens.
Badr al-Jamali, Fatimid governor of Syria, tries to engineer a pro-Fatimid coup in Aleppo; but the rebellion is suppressed by Musa Yabgu.
Asia
King Bagrat IV of Georgia captures the fortress city of Samshvilde, the capital of the neighboring Tashir-Dzoraget.
Mesoamerica
January 4 - The Aztecs migrate from Aztlán to the southern lands in central Mexico.
By topic

Winter - Great German Pilgrimage: Archbishop Siegfried I of Mainz leads a pilgrimage to Jerusalem. Either during this pilgrimage or shortly before it, the Ezzolied; a High German poem on the life of Christ, is composed.
Michaelsberg Abbey at Siegburg is founded by Anno II, archbishop of Cologne.
Construction of the Piazza dei Miracoli at Pisa in Tuscany begins.
Volcanology
Sunset Crater Volcano first erupts