I´m really interested in this post. In this moment I´m finding out about the Baron Sobek´s family, who got married with a russian Baroness Inna Somova. I know they had a child Czeslaw or Vyacheslav. After the WWII, they moved to Vienna, Austria, and the family came originally from Chezkslovaquia.
If you have some information, or show me the way where I can start my research, I would be happy.