Name and origin
The house has been known as the "House of Folkung" since the 17th century, and this name is still the most commonly used in Swedish works of reference. The name "folkung" does appear as early as in 12th century sources, but is then usually not applied to members of the family.
In an effort to avoid confusion with the Folkunge Party some modern historians have argued that "House of Bjälbo" would be a better name because Birger Jarl lived there and it is the family's oldest known manor. Bjälbo is located in Östergötland, outside of Skänninge in the present-day commune of Mjölby. In any case the members of this dynasty never used a name to refer to themselves since family names were not widely adopted in Sweden until the 16th century, thus neither name is more "correct" for the dynasty, apart from the potential for confusion.