#1. http://www.shoreshim.org/en/infoEmperorJoseph.asp
#2. It appears Jews were required to adopt a Germanic name while living in Austria
My great grandfather and great grandmother were from Russia, near Odessa
I have found their Jewish names to be Fiedel, son of David and Taube, daughter of Gershon.
They show up on a Hamburg Amerikan Linie ships manifest as Baerfeld.

Would anyone know an archival location recording name changes?

Thank you