* Siward Biornsson 
* Siward was born about 1020 in DENMARK. * Siward's father was * Bjorn Ulfiusson. He was an only child. He died in 1055 in York ENG.
They had a son and a daughter, named * Waltheof and * Sybil.
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Children
Earl Of Northumberland * Waltheof Of Northumberland
* Waltheof was born in 1046 in Northumberland ENG. He died at the age of 30 on May 31st, 1076 in St Giles Hill, Winchester ENG. He was buried in June 1076 in Crowland Abbey, Lincolnshire ENG.
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