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Male Earl Sigurd [Siward] Biornsson of Northumberland Click to view Earl Sigurd [Siward] Biornsson of Northumberland in the family tree

Sigurd [Siward] was born about 1020 in Denmark.  Sigurd [Siward]'s father was Bjorn Estriden Ulsiusson.  His paternal grandparents were Jarl Ulf (Wolf) Thorgilsson (Thorkilsson) of Denmark and Estrith (Margaret) of Denmark d'Normandy.  He was an only child.  He died in 1055 in York, Yorkshire, England.


Sigurd [Siward]'s family with Aefflaed [Aelfled Elfleda] of Bernicia

They had a son and a daughter, named Waltheof and Sybil (Aelflaed).

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