I am descended from Georg Martin Kalb's son Adam. I don't know Georg Martin Kalb's wife's name either. Just "Maria Elizabetha unknown"! I have had no chance to search for his heimatdorf in Germany; I'm too busy looking for my SCHNECK ancestor's heimatdorf! What is your connection to Georg Martin? I have the same 6 children's names as you list. Johannes m. Maria Elizabeth Mueller; Adam m. Catharina Elizabeth Fischer; Andreas m. Margaretha unknown; Barbara m. Ludwig Schuedler; Elias m. unknown; Jacob m. unknown.