Richard, I have the family book for Berndorf, Waldeck, but I don't know if it covers people in Rhena. The dates range from the 1600s to the mid-20th century, in some cases.
Unfortunately, locations are not specified, and I can only assume that the families it lists were exclusively or primarily from Berndorf. If you will give me the names you are looking for, I will see if they are included.
Maureen