The House of Folkung was a prominent royal dynasty in Sweden that ruled during the late medieval period, particularly from the 13th to the 14th centuries. This family is known for its significant influence on Swedish politics and culture, as well as its connections to various European royal houses through marriage alliances. One of the most notable members of the House of Folkung was Birger Jarl, who played a crucial role in establishing the foundations of the Swedish state. The dynasty's legacy includes contributions to the development of Swedish law and governance, as well as the promotion of Christianity in the region.