Hi Marilyn The Christen family of Wolfenschiessen, canton Nidwalden, is a very interesting one, as they go back to Niklaus von Flüe who was a very famous person in Switzerland. There are many people who can trace their roots back to him. For official information on your part of the family you can contact the
Staatsarchiv Nidwalden firstname.lastname@example.org
As far as I know they charge a fee for their research work.
My grandmother was also a Christen from Nidwalden and I have startet a family tree. If you have more information (first names, birth years, spouses) I can check if the persons you are searching appear in my tree as well. Best regards from Switzerland Gaby