I was very surprised to hear from you. I live here in Denmark, and my Grandmother's mother was born Fjerdingstad, so I know a little about the Fjerdingstad history. If you are interested and are on Facebook , I have started a group called Fjerdingstad/ Petersen. We are quite a few members who are related through the Fjerdingstad Family because of two Brothers from Norway.
I can tell you, that you have relatives both here in Denmark and i USA.
PS: I know that my Grandparents and one of my Grandmothers sisters and her husbond, was in Paris many years ago, and they tryed to find your grandfather. I would very much like to hear more about the Family as I know, that the same is the case for many other familymembers .
Hope to hear from you( perhaps on facebook). Kirsten