1291

Events 
 The Crusades end.
 Switzerland was founded.

 Births 
 February 8 – King Afonso IV of Portugal (d. 1357)
 October 31 – Philippe de Vitry, French composer (d. 1361)
 Pope Clement VI (d. 1352)
 Theodore I of Montferrat (d. 1338)
 Aimone of Savoy (d. 1343)

 Deaths 
 March 10 – Arghun, Mongol ruler
 June 18 – King Alfonso III of Aragon (b. 1265)
 June 26 – Eleanor of Provence, queen of Henry III of England
 July 15 – Rudolph I of Germany, Holy Roman Emperor (b. 1218)
 Hong Dagu, Korean military leader (b. 1244)
 Talabuga, khan of the Blue Horde