[Erikun]

Also most of todays Finland was under Swedish rule until 1809.

[mongol]

Was any part of todays Finland not under Swedish rule 1809?

[Erikun]

The area around Viborg was lost to the russians in 1721 and 1743. The western part of that, Lappeenranta and part of Kymenlaakso, are part of Finland today. https://en.wikipedia.org/wiki/Old_Finland