1012

By place

Europe

• April 12 - Oldřich, duke of Bohemia, deposes his brother Jaromír who flees to Poland. Oldřich recognises the suzerainty of King Henry II of Germany. He secures his rule by suppressing the Vršovci insurgents.

  England

• Spring - King Æthelred II resumes the payment of Danegeld in an attempt to buy off the Viking raiders.

  Ireland

• Máel Mórda mac Murchada starts a rebellion against High King Brian Boru in Ireland, which ends in 1014 at the Battle of Clontarf.

  Scotland

• King Malcolm II reputedly defeats a Danish army at Cruden Bay.

  Arabian Empire

• Summer - The climax of the Bedouin anti-Fatimid rebellion in Palestine is reached. Abu'l-Futuh al-Hasan ibn Ja'far is acclaimed as anti-Caliph with the title of al-Rashid bi-llah.

  Mexico

• The Tepanec tribe settles on the western region of Lake Texcoco. The lineage starts when the Chichimeca chieftain Acolhua marries Cuetlaxochitzin, daughter of Xolotl, another Chichimeca chieftain.

  By topic

Religion

• April 19 - Ælfheah, archbishop of Canterbury, is murdered by his Danish captors at Greenwich.
• May 12 - Pope Sergius IV dies after a 3-year pontificate at Rome. He is succeeded by Benedict VIII as the 143rd pope of the Catholic Church.