Overview
Birger Jarl (21 October 1266), also known as Birger Magnusson, was a Swedish statesman, jarl, and a member of the House of Bjelbo, who played a pivotal role in the consolidation of Sweden. His first marriage was to Princess Ingeborg of Sweden, which created his base of power. Birger led the Second Swedish Crusade, which established Swedish rule in Finland. Additionally, he is traditionally attributed with the foundation of the Swedish capital, Stockholm, around 1250. Birger used the Latin title of ("Duke of Sweden"), and the design of his coronet combined those used by continental European and English dukes.
Biography
Early life
Birger grew up and spent his adolescence in Bjälbo, Östergötland, but the exact date of his birth remains uncertain and available historical sources are contradictory. Examinations of his mortal remains indicate that he was probably about 50 upon his death in 1266, which would indicate a birth around 1216. However, his father Magnus Minnesköld is assumed to have died no later than 1210, which would lead to an assumed birth a few years earlier. In any case, he was the son of Ingrid Ylva, who according to Olaus Petri was a daughter of Sune Sik and granddaughter of King Sverker I of Sweden, which would make Birger descended from the House of Sverker. His brothers or half-brothers — Eskil, Karl, and Bengt — were all born long before 1200, and it can therefore be assumed that they had another mother. He was also a nephew of the jarl Birger Brosa from the House of Bjelbo. The combination of this background proved to be of vital importance.
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