I came across this interesting link. If you have ancestors from Terjärv, you can submit a request to this individual to locate a missing branch or two of ancestors, free of charge. In return, she asks that you reciprocate by sending descendant info back to her.
www.joellesteele.com/JSE-SwedeFinn.html
www.joellesteele.com/JSE-SwedeFinn.html