Older Swedish historians, such as Natanael Beckman who wrote a biographical article in Svenskt biografiskt lexikon, therefore claimed that Boleslaw and Kol were sons of Sverker.
[2] On the basis of this, Swedish historians such as Nils Ahnlund and Adolf Schück have claimed instead that there were two different Boleslaw, uncle and nephew; thus the contenders were indeed sired by John, who died a young man in c.
She is known to have survived him and presumably raised her children during the turbulent years following John's and Sverker I's deaths, before entering Vreta Abbey as a nun.
This hypothesis is based on an annal entry which mentions a Princess Cecilia, mother of Eric the Saint, as the sister of Kol and Ulf (Ubbe).
[10] Though several sources affirm that Boleslaw actually was King of Sweden for a few years, the Swedish Royal Court does not recognize him as such in its official list of rulers.