Hello, Your grandfather Fred Marx Jens was the brother of my great grandmother Dorothea Jens Kruse. I have been doing quite a bit of research on the Jens family and have quite a lot of information on your grandfather and some information about your grandmother Elsie. Let me know if you are interested. I am happy to share with you. Do you know if there are still any of your Jens family members living in the Deer Park, Washington area?