The House of Bjälbo produced most of the
jarls in Sweden in the 11th, 12th and 13th centuries until the title was abolished in 1266. Different branches of the family were often rivals for the office of jarl. Most of the kings during that time were also from
Östergötland. Around 1100,
Folke the Fat became the first known Bjälbo jarl, and probably the first jarl of all Sweden, under king
Inge I of Sweden. He was married to Ingegerd Knutsdotter of Denmark, daughter of king
Canute IV of Denmark. According to legends, he was the first of his family so elevated. Nothing is known of any of Folke's collateral relatives, though it is well-established that several of his sons' descendants were important lords. Other notable jarls from the family were
Birger Brosa,
Karl the Deaf,
Ulf Fase, and
Birger Jarl. In the early 13th century, some members of the family moved to Norway, and held the office of jarl there. Noteworthy is that regardless of the ruling royal family, Bjälbos continued to hold the position of the jarl in the kingdom. Several members of the family were also
Bishops of Linköping at least in the 13th century. Diocese covered the area of
Östergötland. Bishop of Linköping was often involved in the eastern activities. Early
Dukes of Finland were from the House of Bjälbo and used the traditional coat of arms with a rampant lion. This developed later to the current
coat of arms of Finland during the reign of
Johan as Grand Duke of Finland, the lion from which serves as the symbol of the state and in stylized forms various authorities. == Rise to royalty ==