Hi Bill and Robert,
Thanks so much! I didn't know about Catharina Perrein & Johanna Adam. I am independently going through the original Sankt Hubert records since this FB is a bit messy, so this connection warrants some additional follow up. I believe these Perrein "sisters" had a brother Jakob Pereng (1766-1809), who is my 6x great grandfather. There was another sibling Johann Pereng, who is the father of the Franz Perreng that Robert mentioned. I am also on ftDNA but did not notice either of you as a match. Based on my research Pereng and Piringer families seem to be separate (not a spelling variation), so perhaps you are connected through the Piringers instead. Daniel and I discussed the Perengs this summer and we were both at a dead end, but now I'm motivated to research this again with this new info.
Thanks,
Mark