1112

By place

Byzantine Empire

• Spring - Malik Shah, Seljuk ruler of the Sultanate of Rum, begins incursions into Anatolia. He marches on Philadelphia with his army, but is halted by the Byzantines under Gabras, governor of the Theme of Chaldia.

  Levant

• Spring - Seljuk forces under Toghtekin, Turkic governor of Damascus, intervene at Tyre, and force King Baldwin I of Jerusalem to raise the siege.
• April 10 - The Crusaders fight their way back to Acre.

  Europe

• February 3 - Ramon Berenguer III, count of Barcelona, obtains the county of Provence, due to his marriage to the heiress, Douce I. Ramon's dominions stretches as far east as Nice.
• May 22 - Henry, count of Portugal, dies from wounds received during a siege at Astorga. He is succeeded by his 3-year-old son Afonso I, but his mother Theresa would rule Portugal alone and becomes regent.
• Duke Bolesław III of Poland has his half-brother Zbigniew blinded and thrown into a dungeon in Tyniec Abbey. Archishop Martin I excommunicates Bolesław for committing this terrible crime.
• Otto, count of Ballenstedt, is appointed duke of Saxony by Emperor Henry V, but is later stripped of his title.
• Salzwedel in the Altmark is founded.
• The Margraviate of Baden is founded by Herman II.

  By topic

Literature

• Gallus Anonymus, Polish chronicler and historian, begins to write Gesta principum Polonorum, to Bolesław III.

  Religion

• Easter - The citizens of Laon in France, having proclaimed a commune, murder Bishop Waldric in his cathedral.