Siward BJORNSSON & Aelfled de BERNICIA 
They had a daughter named Aelfled (Sybil) Fitzsiward.
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Personal Details
Siward BJORNSSON
Siward was born about 1031 in Denamrk. He died in 1055 in York, Yorkshire, England.
Aelfled de BERNICIA
Aelfled de was born in 1027 in Bernicia, Northumberlandshire, England. She died at the age of 43 in 1070.
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Children
Aelfled (Sybil) Fitzsiward BJORNSSON
Aelfled (Sybil) Fitzsiward was born in 1014 in Northumberlandshire, England. She died at the age of 26 in 1040 in Scotland.