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Male Björn Ulfsson Click to view Björn Ulfsson in the family tree

Björn's father was Ulf (Wolf) Thorkilsson and his mother was Estrith (Maragaret) Of Denmark.  His paternal grandparents were Thorkil Sprakalaeg and Thyra Haroldsdottir.  He was an only child.


Björn's family

He had a biological son named Siward.

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