Hello, I am a French citizen, my grandfather Louis Zahm being a native of Alsace/Lorraine, had a son Jacques Zahm(my father), with his wife Adèle. Jacques told me that part of his ancestors had moved to the US, and Switzerland. The rest of my family in France is reduced to almost nothing (exepted for extended cousins whom I am not aware of)due to WWI. If any of you could help me to trace back my tree, I would be extremely grateful. Thank you, Merci d'avance.