 Descending from the families of Bjelbo and Sverker, she was a member of one of the Geatish clans.Catherine's father Sune Folkason was Lord of Ymseborg, lawspeaker of Västergötland, and in some literature he is referred to as Earl of the Swedish.Eric XI (1215–50) of the Eric dynasty became king in 1222 and was exiled by co-king Canute II of Sweden from 1229 to 1234.