i have a german book that tells me that many families moved from the Rhineland?pfalz area in Germany to the area formerly known as the province of Bukovina, Austria (now part of Romania). My family was one of those families. They apparenetly moved form between 1740 to 1780.
Anything before that time is very speculative for my family tree of Ollingers!
If you want my info, let me know.