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Male Siward  BJORNSSON, Northumbria Click to view Siward  BJORNSSON, Northumbria in the family tree

Siward  was born about 1005 in Denmark.  He died in 1055 in York, Yorkshire, England.

Siward 's family with Aelfled (Elfreda) of BERNICIA

They had a son named Waltheof II Earl of .