Bengt Jönsson (Oxenstierna), born in the year 1390, emerged as a prominent Swedish statesman and noble during a pivotal era in Scandinavian history. His political career flourished under the Kalmar Union, where he notably served as co-regent of Sweden alongside his brother Nils Jönsson (Oxenstierna) for a brief period in the summer of 1448.
His influence in Swedish governance began in 1435 when he became a member of the Privy Council. By 1439, he had taken on the role of magistrate of Uppland, further solidifying his position within the political landscape. In recognition of his service, he was knighted by King Christopher of Bavaria in 1441, the same year he was appointed Master of the Royal Court.
Bengt's personal life was equally notable; he married Kristina Kristiernsdotter (Vasa) in 1416, who was previously wed to Karl Stensson Blad. Together, they had four sons, one of whom, Jöns Bengtsson Oxenstierna, would go on to become the Archbishop of Uppsala from 1448 to 1467.
Residing at Salsta manor in Lena parish, Norunda, Uppland, Bengt was known for his generosity, making significant donations to Tensta Church. His legacy is also captured in art, as he was featured in a fresco created by the artist Johannes Rosenrod in 1437.