Siward Bjonssson, Earl of NORTHUMBRIA 
He had a biological daughter named Aelflaed Sybilla of.
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Personal Details
Siward Bjonssson, Earl of NORTHUMBRIA
Siward Bjonssson, Earl of was born about 0995. Siward Bjonssson, Earl of is no longer alive.
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Children
Aelflaed Sybilla of NORTHUMBRIA
Aelflaed Sybilla of was born in 1014 in Northumbria. Aelflaed Sybilla of is no longer alive.