Valdemar of Sweden was a Swedish prince born in 1260, the son of King Valdemar of Sweden and Queen Sofia of Sweden. He was a member of the House of Bjelbo and played a significant role in the political landscape of medieval Sweden. Valdemar was known for his attempts to strengthen the monarchy and expand the kingdom's influence. In 1281, Valdemar became the Duke of Finland, where he governed until 1290. His reign was marked by efforts to consolidate power and manage conflicts with neighboring regions. Valdemar's legacy is often associated with the early development of the Swedish state and its territorial ambitions.