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

Siward was born in 1020 in Denmark.1   Siward's father was Bjorn Ulfiusson.  His paternal grandparents were Ulf Wolf Thorkilsson and Estrith Margaret of Denmark. He had a sister named Sibyl.  He was the younger of the two children.  He died at the age of 35 in 1055 in York, England.  He was buried in Galmanho Abby, York, Yorkshire, England.1 1 


Siward's family with Aelfled Elfleda' Bernicia

‌Siward and Aelfled Elfleda' were married in a religious ceremony about 1033 in Of, Northumberland, England.1   They had a son named Waltheof Earl Of.

1 Joanne's Tree.1 GED.GED
Further source/citation:
daveanthes.FTW

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