(c. 1200 – 21 October 1266), or
Birger Magnusson, was a
Swedish statesman,
Jarl of Sweden and a member of the
House of Bjelbo, who played a pivotal role in the
consolidation of Sweden. Birger also led the
Second Swedish Crusade, which established Swedish rule in
Finland. Additionally, he is traditionally attributed to have founded the Swedish capital,
Stockholm around 1250. Birger used the
Latin title of
Dux Sweorum which in English equals
Duke of Sweden, and the design of his
coronet combined those used by continental European and English dukes.