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Male Siward Biornsson Click to view Siward Biornsson in the family tree

Siward was born in 1005.  Siward's father was Bjorn Ulfsson.  His paternal grandparents were Earl Ulf (Ulfius) Thorkillsson Of Denmark and Astrid (Estrith) Sveinsdoitter Of Denmark.  He was an only child.  He died at the age of 50 in 1055.


Siward's family with Lady  Aelfreda De Northumberia

They had a son and a daughter, named Syward and Sybil.

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