Siward Biornsson 
Siward was born in 1020 in DENMARK.1 He died at the age of 35 in 1055 in YORK, ENG.1
They had a son named Waltheof II.
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Children
Waltheof II UNKNOWN
Waltheof II was born in 1046 in NORTHUMBERLAND, ENG.1 He died at the age of 30 on May 31st, 1076 in WINCHESTER, ENG.1
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