Claim: Sophia of Denmark's sisters Agnes and Jutta escaped a convent and fled to the Swedish Royal court, and Jutta had an affair which may have resulted in a child in 1273, with King Valdemar,  the son of the Swedish princess Ingeborg Eriksdotter and Birger Jarl.
Evidence: She had no brothers, but three sisters, Ingeborg, Agnes and Jutta. In 1271, Agnes and Jutta escaped from the convent in Roskilde and fled to their sister Queen Sophia in Sweden. They were kindly welcomed at the Swedish royal court, but Jutta and Valdemar made a scandal by having an affair. It may have resulted in a child in 1273. Valdemar was the son of the Swedish princess Ingeborg Eriksdotter and Birger Jarl, from the House of Bjelbo.