Gyllenhielm
Three medieval villages at the location — Ösby, Bolstomta, and Lundby — were bought by Lord High Admiral Carl Carlsson Gyllenhielm (1574-1650) in the 1620s and subsequently unified into a single estate named "Karlberg" after himself. He then had master mason Hans Drisell build a Renaissance palace featuring pink plaster and tall gables.
As Gyllenhielm's widow died six years after her husband, a lengthy litigation regarding the inheritance followed. Plans in the mid 1660s to transfer the estate to the widowed Queen Hedwig Eleonora were cancelled as Lord High Admiral Magnus Gabriel De la Gardie (1622-1686) sold one of his palaces to the queen (today Ulriksdal Palace, also in Solna) and bought Karlberg from the heir of his precursor in 1669.
Read more about this topic: Karlberg Palace, History