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Male Siward Bjornsson Earl of Northumbria Click to view Siward Bjornsson Earl of Northumbria in the family tree

Siward was born about 1020 in Of,,Denmark.1   Siward's father was Biorn or Bjorn ULFIUSSON The Dane and his mother was Flicka DANSK.  His paternal grandparents were Ulf (Ulsius) Thorkilsson Jarl of Denmark and Estrid Svendsdatter of Denmark.  He was an only child.  He died in 1055 in York,Yorkshire,England.  He was buried in Galmanho Abby,York,Yorkshire,England.1 1 


Siward's family with AEfflaed of Bernicia

‌Siward and AEfflaed were married in a religious ceremony about 1038 in Northumbria,England.  They had two sons named Waltheof II Earl of and Osbeorn of.

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