Sigurd Sow Halfdansson King in Ringerike
Sigurd Sow was born about 0970 in Probably Ringerike, Norway.  He died about 1018.

 Asta Gudbrandsdottir
Asta was born about 0970 in Vestfold, Norway.  Asta is no longer alive.

 Harald III Haardraada Sigurdsson King of Norway
Harald III Haardraada was born in 1015.  He died at the age of 51 on September 25th, 1066 in Stamford Bridge, Yorkshire, England.

 Halfdan Sigurdsson
Halfdan was born in Probably Ringerike, Norway.  He died before 1047.