December 10 is the 344th day of the year (345th in leap years) in the Gregorian calendar; 21 days remain until the end of the year. == Events == === Pre-1600 === 1317 – The Nyköping Banquet: Birger, King of Sweden treacherously seizes his two brothers, dukes Valdemar and Erik, who are subsequently starved to death in the dungeon of Nyköping Castle.
December 10 is the 344th day of the year (345th in leap years) in the Gregorian calendar; 21 days remain until the end of the year. == Events == === Pre-1600 === 1317 – The Nyköping Banquet: Birger, King of Sweden treacherously seizes his two brothers, dukes Valdemar and Erik, who are subsequently starved to death in the dungeon of Nyköping Castle.
Source: Wikipedia "December 10" · CC BY-SA 4.0
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