1109

By place

Levant

• July 12 - Siege of Tripoli: After a 7-year siege, Tripoli falls to the Crusaders. Fakhr al-Mulk Radwan, Seljuk sultan of Aleppo, submits to Bertrand of Toulouse. He establishes the County of Tripoli, the fourth Crusader state in the Middle East. Bertrand deposes Raymond's nephew William II as nominal count of Tripoli, who dies of an arrow wound sustained during the siege.

  Europe

• Summer - Almoravid emir Ali ibn Yusuf organizes an public ritual of penance of the works of Al-Ghazali, in front of the Great Mosque of Cordoba.
• July 1 - Urraca of León becomes queen of León, Castile and Galicia after the death of her father, King Alfonso VI. She marries Alfonso I.
• August 10 - Battle of Nakło: Bolesław III leads an expedition into Pomerania. He besieges the castle of Nakło, and defeats a Pomeranian relief force.
• August 24 - Siege of Głogów: German forces led by King Henry V besiege Głogów. He is forced to abandon the siege – due to attacks of Polish guerilla warriors.
• August 24 - Battle of Hundsfeld: Bolesław III defeats the imperial forces under Henry V at Hundsfeld. The Germans are ambushed by the Polish forces.
• The Almoravid army led by Ali ibn Yusuf fails to reconquer Toledo.

  By topic

Education

• Anselm of Laon, French monk and theologian, becomes chancellor of the cathedral at Laon.