Biorn (Bjorn) Ulfiusson (Estridsen) 
He had a biological son named Siward.
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Personal Details
Biorn (Bjorn) Ulfiusson (Estridsen)
Biorn (Bjorn) Ulfiusson was born about 1021 in Denmark. Biorn (Bjorn) Ulfiusson is no longer alive.
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