Valdemar Birgersson, also known as Waldemar, was King of Sweden from 1250 to 1275. A member of the House of Bjälbo, he was the eldest son of Birger Jarl and Ingeborg Eriksdotter. He was elected king f
Gerhard II of Holstein-Plön
…The seal reads He married on 12 December 1275 the Swedish Princess Ingeborg (c. 1262 – c. 1293), a daughter of King Valdemar of Sweden. They had four children: Catherine (c. 1276 – before 1300…