Viborg and Nyslott County
Viborg and Nyslott County,
Viborgs och Nyslotts län or
Viipurin ja Savonlinnan lääni, was a
County of
Sweden from
1634 to
1721, when by the
Treaty of Nystad Viborg was ceded to
Russia. The remaining areas were renamed
Kymmenegårds and Nyslott County. This was also ceded to Russia in
1743. In
1812 the conquered lands were added to the Grand Duchy of Finland as
Viborg County.
After World War II the Soviet Union annexed parts of the area and the remaider was renamed Kymi Province. In the reform in 1997 it was added to the Province of Southern Finland.
See also: län, Old Finland, Karelia