I am the great-great-grand daughter of George Keller and Barbara Bogner, the daughter of Antoine and Agatha Haffner. One of George and Barbara's daughters, Gertrude, had my grandmother Virginia. We have never been able to find my grandmother Virginia Keller's father (altho I think I've tracked him down) and my mother was Janet Osterman Adams. Virginia married a man named Robert Osterman.
I would love any information about the Bogner-Haffner family. Thanks!