Wow, thank you, this is incredibly helpful! I will do my best to navigate the website you have provided for further information. Until now, I had always thought that information on this part of my family was lost forever. As the story goes, according to my grandmother, Rudolf was "run out of the country" for his political beliefs which were not adherent to those in power at the time. His wife Paulina and children followed him to the U.S. a few years later. That is all I know of him, except that he was a tailor in Hoquiam, Washington, USA, right up until his death in 1930. I intend to read up on Austrian/Czech history to learn more of that era.
A question for you: on the information you have provided, what does "nee" mean? Wives seem to always have that after their first name, then followed by a man's name. I am assuming that Josefa nee Isidor Sohr would mean Josefa Sohr, daughter of Isidor Sohr? Is that correct?
Thanks again for all of your help!