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Bjørn Haraldsen Ironside (Bjørn Jærnside; died 1134) was a Danish prince.
Bjørn was one of the 15 sons of Prince Harald Kesja. His mother was Ragnild Magnusdatter. Bjørn married Princess Katarina Ingesdotter of Sweden, the daughter of King Inge I of Sweden. Bjørn was the father of Christina Bjornsdatter, a Swedish queen.
Bjørn accidentally drowned with his brother Eric in 1134 near Schleswig.
|Ancestors of Bjørn Haraldsen Ironside|
- ^ Johannes C. H. R. Steenstrup (29 August 2010). "Medieval Danish Families: Two sons of Harald Kesja". Retrieved 2010-12-22.
- ^ Harald Kesja (Dansk biografisk Lexikon)