In 1721, the Nystad Peace Treaty was signed ending Swedish dominance in the Baltic region. From 1809 to 1917, Finland was a Grand Duchy with the Russian Czar as the constitutional monarch.Karelia, where most of the Russo-Swedish conflicts occurred, was influenced by both cultures though mostly it remained peripheral to both epicentres of power.Finns value being close to nature, the agricultural roots are embedded in the rural lifestyle.Finns are also nationalistic, as opposed to self-identification with ethnicity or clan. The traditions were partly indigenous, but also influenced by Baltic and Norse paganism.Notably, nationalists did not consider the Swedish-speakers members of a different (Swedish) nation; in fact, many Fennomans came from Swedish-speaking families.
Expression of Finnish identity by the University docent, A. Arwidsson (1791–1858), became an often quoted Fennoman credo: "Swedes we are not, Russians we do not want to become, let us therefore be Finns." Nationalism heightened and resulted in a declaration of independence from Russia on December 6, 1917, Finnish Independence Day.
Swedish-Finns are also sometimes referred to as "Ankkalampi" ("Ankdammen" or "The Duck Pond") due to their relative small number where everybody knows each other.
Today, however, most differences are blurred (though rich, powerful Swedish-speaking families still exist) due to mixed marriages and inter-cultural homogenization and communication.
The Swedish-Finnish group does have unique traditions distinct from the mainstream Finnish-speaking ones, but does not live in a different society.
The group has various origins, both from language switching and from immigration.