Ingeborg, Princess of Sweden, Duchess of Sweden 1248–1254, it is unknown whether this was a primary title in its own right or adopted as consort of Birger Jarl
Ingeborg Eriksdotter's marital engagement took place in about 1234 in connection of her brother Eric XI resuming the Swedish throne from the 'usurper' Canute II of Sweden, to have the mighty House of Bjellbo as their allies.
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