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

Siward Bjornsson was born about 1010 in Denmark.1   He died in York, Yorkshire, England.1 

Siward Bjornsson's family with Aelflaed of Bernicia

They had a daughter named Sybilla.

1 1771067.ged

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