Tostig Godwinson
Estrid Bjørnsdotter was the daughter of Björn Byrdasvend and Rangrid Guttormsdotter, who was a possible descendant of Tostig Godwinson, the brother of the last Anglo-Saxon King of England Harold Godwinson. She was the widow of Tore Skinnfeld. She later married King Magnus V in the year of 1170, and thereby became queen of Norway.