1098

Events 
 December 12 – massacre of Ma'arrat al-Numan where Crusaders resort to cannibalism.
 First Crusade: end of the siege of Antioch.
 Cîteaux Abbey founded.

 Births 
 September 16 – Hildegard of Bingen, German mystic writer, and composer (d. 1179)

 Deaths 
 January 3 – Walkelin, first Norman bishop of Winchester
 August 1 – Adhemar of Le Puy, papal legate
 December 1 – Domnall Ua hÉnna, Pre-Reformation Bishop of Killaloe
 Baldwin II, Count of Hainaut
 Hugh of Montgomery, 2. Earl of Shrewsbury