Birger Jarl (c. 1210 – 21 October 1266), also known as Birger Magnusson, was a Swedish statesman and regent, jarl, and a member of the House of Bjälbo, 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 dux sveorum et guttorum ("duke of Swedes and Geats"). Biography.
https://en.wikipedia.org/wiki/Birger_Jarl
Birger Jarl (c. 1210 – 21 October 1266), also known as Birger Magnusson, was a Swedish statesman and regent, jarl, and a member of the House of Bjälbo, 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 dux sveorum et guttorum ("duke of Swedes and Geats"). Biography.
