Birger Magnusson of Sweden

Birger Magnusson (c. 1280–1321) became King of Sweden in 1290 at the age of ten, when his father Magnus Ladulås died; Torkel Knutsson served as regent.

His reign was torn by feud with his brothers Erik and Valdemar, who imprisoned him at the Håtuna games in 1306. Released in 1308, he sought Danish aid but had to surrender the royal domain in exchange for other territories. At the Nyköping Banquet of 1317 he seized the dukes, whom Erik's Chronicle says were starved to death in Nyköping Castle.

The dukes' supporters drove him into Danish exile in 1318. His son Magnus was executed in 1320, and Birger died in Denmark after 31 May 1321.