11th century
The 11th century was defined by the calendar of Earth as occurring from the year 1001 through the year 1100.

Events 
 On Earth, Irish warriors led by King Brian Boru defeat invading Vikings at the Battle of Clontarf. Brian Boru is killed by the Vikings during the battle. ()

Appendicies

Background information
 The First Crusade was fought during this century.

External links 
 
 

nl:11e eeuw