In September 1683, Ulrik Fredrik Gyldenløve, the illegitimate son of the King, sold the manor to Danish officer Gustav Wilhelm Wedel Jarlsberg (1641–1717), who was made Commanding General in Norway in 1681.
In 1812, Feudal Count Johan Caspar Herman Wedel-Jarlsberg again rebuilt the manor, in the Empire style.
Around the manor house, large but simple garden and park areas were arranged.
Jarlsberg Estate is today one of Norway's largest farms, with about 750 acres (3.0 km2) cultivated land.
[4] In June 2024, archaeologists announced the discovery of the remains a Viking ship with numerous rivets and two horse crampons using a penetrating radar.