The House of Bjelbo was a noble family in medieval Sweden, known for its influence and power during the 13th and 14th centuries. The family originated from the region of Bjelbo in Östergötland and played a significant role in the political landscape of the time, often intermarrying with other noble families to strengthen their position. Members of the House of Bjelbo included notable figures such as Birger Jarl, who was a key leader in the establishment of the Swedish state. The family's legacy is marked by their contributions to the development of Sweden's governance and their involvement in various conflicts and alliances throughout the medieval period.