Her eldest sister, Christina, lived in Kievan-Rus', and was in Sweden considered as too far away to be given a share in the inheritance of their father.
[2] Katarina is not mentioned in these transactions, but as the only unmarried daughter of Inge left in Sweden, she would have been one of his heirs.
[2] According to the Knýtlinga saga, Katarina married the Danish prince Bjørn Haraldsen Ironside.
[2] Only one child is known from this union; their daughter Christina, future queen of Sweden, who is estimated to have been born in circa the year 1122.
[3] Her daughter Christina is estimated to have married the future king Eric IX of Sweden in the 1140s.