Kristina Birgersdotter 1248 - 28 Feb 1288 (1248–1288) Parents Birger Jarl Ingeborg Eriksdotter of Sweden Children Helena av (Ljuna) Siblings Eric Birgersson Rikissa Birgersdotter Valdemar Catherine Birgersdotter of Bjelbo Gregers Birgersson Benedict, Duke of Finland Magnus III of Sweden Ingeborg Birgersdotter of Bjelbo Partners riddare Sigge Guttormson till Lyuna