I am familiar with many of these names. My mother's family name is Payer. My maternal grandmother was Maria geb. Klein. She had two sisters and one brother. One of her sisters was Mahder, Luise. I believe my maternal grandfather's mother's maiden name may have been Reitter, The Payer side of the family emigrated to the U.S. in 1950, but my grandmother's siblings ended up in Stuttgart. If you're interested, I can ask my mother for additional names.