Thank you very much for your reply and for the link to the geopatronyme website. It is odd that my grandfather's info indicates Alsace and yet there are no Chenot familys in the Alsace region. I will look into the fact that the region was sometimes part of Germany and sometimes part of France. I don't know the dates that correspond with that. Perhaps it really is Germany he is from. In any case, thank you for your time and effort.