Finnish surname suffix, "-ainen"

Just to confuse things a bit more -Suomalainien = Finnish,
Ruotsalainen = Swedish.

Suomi = Finland, Ruotsi = Sweden.

Also: “Ruotsalainen is a Finnish surname (literally meaning “a Swede”, but as a name originally referring to the adherents of Lutheran Christianity in Karelia). It may refer to:”
Followed by a list of Finnish people.