The history of Länna mills goes back to the Middle Ages. The homestead was originally called Bryninge and existed in 1257 under Vårfruberga monastery. In 1486, Bryninge was acquired by Sten Sture d.ä. and was taken over after him by the crown during Gustav Vasa's regime. The place was acquired from the crown by the merchant Henrik Lohe, who in 1644 built a bar iron hammer. Around the same time, he also became the owner of Åker's sawmill. After him, Bryninge mill, as it was now called, was owned by, among others, members of the Wattrang and Klinckowström families.
In 1782, the owner was Joachim Daniel Wahrendorff, who since 1772 was mill patron at Åker's piecemeal mill. Länna mills were incorporated into Wahrendorff's large empire of mills and country estates. Much of it is today included in the eco-museum Åker Bergslag. In addition to Åker's small mill, the properties Taxinge-Näsby, Berga and Ånhammar were included. After that, Länna mill had roughly the same owner as Åker's piece mill. In 1853, the operations at Länna were closed down. In 1894, the property Länna passed to Colonel Henrik von Stockenström and remained in the family until the present day.
Today's Länna mill:
On the farm, conventional farming and forestry is carried out by Länna Godsförvaltning AB. Länna Bruk's land property consists of forest about 2,250 hectares, fields and pastures about 550 ha. The total area is approximately 3,300 ha. About thirty tenants live in the various houses.