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|1318 by topic|
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|Births – Deaths|
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|Establishments – Disestablishments|
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|1318 in poetry|
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- March – King Birger of Sweden is deposed, and forced to flee to Denmark (alternative date is April).
- April 1 – Berwick-upon-Tweed is retaken by the Scottish from the English.
- April – The inhabitants of Benevento, Italy rise against the Pope, and demand some political autonomy. The rebellion is crushed by William of Frejus, and the archbishop of Naples.
- May 11 – Battle of Dysert O'Dea: The Irish armies of Conor O'Dea defeat the Hiberno-Normans under Richard de Clare.
- June 27 – Mats Kettilmundsson is appointed regent (rikshövitsman) of Sweden, in the absence of a Swedish king.
- October 14 – Battle of Faughart: An Hiberno-Norman force defeats a Scots-Irish army commanded by Edward Bruce (who is killed in the battle), ending the Bruce campaign in Ireland.
- Emperor Go-Daigo succeeds Emperor Hanazono on the throne of Japan.
- Pope John XXII declares the doctrines of the Franciscans, advocating ecclesiastical poverty, erroneous.
- Disease hits cattle and sheep, reducing the herds and flocks in Europe.
- Qala'un Mosque, Cairo, Egypt is founded by Al-Nasr Muhammad.
- June 8 – Eleanor of Woodstock, countess regent of Guelders, eldest daughter of King Edward II of England (d. 1355)
- September 11 – Eleanor of Lancaster (d. 1372)
- date unknown – Margarete Maultasch, Countess of Tyrol (d. 1369)
- February 14 – Marguerite of France, queen of Edward I of England (b. 1282)
- October 14 – Edward Bruce, High King of Ireland (b. 1275)
- November 22 – Mikhail Yaroslavich, Russian prince (b. 1271)
- date unknown
- Llywelyn Bren, Welsh rebel
- Heinrich Frauenlob, Bohemian musician
- Rashid-al-Din Hamadani, Persian writer and historian (b. 1247)
- Erik Magnusson, Swedish Duke, brother of King Birger (starved in a dungeon at Nyköpingshus)
- Valdemar Magnusson, Swedish Duke, brother of King Birger (starved in a dungeon at Nyköpingshus)
- Uginet, F. (1968). "La vie à l'abbaye de Sainte-Sophie de Bénévent dans la première moitié du XIVe siècle". Mélanges d'archéologie et d'histoire. 80 (2): 681–704.