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* December 10 – December 11 – King Birger of Sweden has his brothers, Dukes Eric and Valdemar, captured and thrown into a dungeon during the Nyköping Banquet, as a revenge for their imprisonment of him in the Håtuna games in 1306.

As the dukes soon starve to death in the dungeon, their followers rebel against the king, throwing Sweden into civil war, in which the king is deposed in 1318.