Jarlsberg Manor (Norwegian: Jarlsberg Hovedgård) three kilometres northwest of the centre of the town of Tønsberg in Vestfold og Telemark, Norway has traditionally been the residence of members of the Wedel-Jarlsberg family.
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. Field Marshal von Wedel received the name Wedel af Jarlsberg in 1684, at which time he by letters patent was created a feudal count.
After a fire in 1699, the manor house was built up again. In 1812, Feudal Count Johan Caspar Herman Wedel-Jarlsberg rebuilt the manor in the empire style. Around the manor house there were arranged big, but simple garden and parks areas.
The manor house is mainly from 1812, but with various improvements. The first floor of the main building is the column hall that has been used for concerts. Knight's hall on the second floor is used for private companies. There are other public trails over the property along the shoreline and through woodland which is also a private cemetery. Jarlsberg Estate is today one of Norway's largest farms with about 750 acres (3.0 km2) cultivated land.
- "Jarlsberg hovedgård" (Grevskapet Jarlsberg)
- Øystein Rian. "Gustav Wilhelm Wedel Jarlsberg". Norsk biografisk leksikon. Retrieved July 1, 2017.
- "Historie". Jarlsberg Hovedgard. Retrieved July 1, 2017.
- "Jarlsberg Hovedgaard Sem og Slagen" (en bygdebok. 2. bind: Kulturhistorie - første del Tønsberg: Høgskolen i Vestfold, 2001)