Jean, I see your last name is Ensch. I have in my family tree a Nicholas Prommenschenkel born abt 1851 married to a Marie Louise Ensch b. abt 1856. They had a son Adolphe Prommenschenkel. I don't really know the connection to my Prommenschenkels (my ancestors in that line are:
Marie Catherine Bromenschenkel, Jacob Bromenschenkel, Nicolas Prommenschenkel (married Marguerite Muller in 1846 in Consdorf), Bernard Prommenschenkel and Elisabeth Rollinger, Michel Prommenschenkel and Elisabeth Federspiel, Joannes Prommenschenkel and Marguerite, Maximus Prommenschenkel and Catherina b. abt 1694 in Stegen.
I also have a Pierre Ensch b. abt 1770 in Beckerich married to a Madeleine Prommenschenkel daughter of Theodore Prommenschenkel and Susanne Mathay.