1091

Events

* Henry, son of William I, attempts a coup against his brothers but fails to seize the English throne.
* With the take of Noto, the Normans complete the 30 year long conquest of Sicily from the Islamic rulers.
* Roger Guiscard takes Malta.
* William Rufus of France invades Normandy and gains a foothold in it.
* The Islamic Abbadid dynasty ruling in Spain falls when the Almoravids storm Seville.
* Battle of Levounion: The Pechenegs besiege Constantinople, but are defeated so decisively by Emperor Alexius I that they fade into oblivion.
* Cardiff Castle is built.
* Athanasius VI bar Khamoro becomes Syriac Orthodox Patriarch of Antioch.
* October 23 — London Tornado of 1091: A T8/F4 tornado is recorded in St Mary-le-Bow of London, England, which destroys London Bridge.

Births

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Deaths

* Robert D'Oyly, first Lord of Oxford Castle
* 17 June — Dirk V, Count of Holland