Just found your message in this site. I am a member of the Perutz family. I live in Brasilia, Brazil. We just had our first world meeting of the family in Prague, in September of 2003. I can tell you more about the family if you would like. The names you describe, like Siegmund, Marion Perutz, are from my family tree. Did you receive any information so far? What is the purpouse on your search? If you want, write to my e-mail, email@example.com.