Ulf Thorgilsson & Estrid Svendsdatter 
Ulf and Estrid were married in a religious ceremony about 0987.1 They had five sons named Svend, Biorn (Bjorn), Asbjorn, Bjorn Estridsson and Niels.
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Children
Svend
Svend was born about 0988 in Denmark/England.2 He died on April 29th, 1076 in Doderup, Abenraa, Denmark.2