I've been studying Ashkenazi Jews in Russia and Eastern Europe and I've noticed that there are very few Jews in those countries with slavic sounding last names, infact most have Germanic sounding names like Goldstein, Goldberg, Gerber, Berman, etc., did the Ashkenazi Jews migrate from Germany to the Eastern European countries? I am interested to find out how these Germanic names were given to Jews and how they ended up in Eastern Europe? I heard that a lot of it had to do with the expansion of the Austrian-Hungarian empire, is this true? Would like to hear more about this.