I've found some more stuff on the Petremand/son Frederic Nicolas Juillard line...will give it to you tomorrow once I've added it to the tree. Also, I'm still searching for anything on your Roux...and...I found the Barbier that you had one name and I had the other name...she had 3 names....Elisabeth Anne Catherine Barbier...solved that mystery!
Did Suzanne Roux die in Seloncourt? I have records of the deaths in Seloncourt...don't know if they include 1808 or not...will look and see. I know that one of mine died before 1818, according to her children's marriage records, but I still haven't found her death record.
And as I mentioned previously, there is a group of Rouxs in Seloncourt that I've not been able to connect with yet, but believe they are all related...far enough back. The problem is that I don't have the records that go that far back. But these Rouxs married several Coulons. So there maybe a connection there, also. At this point, I just have Marie Elizabeth Coulon who married Jean Georges Roux that connects to mine.
Also I found some more info on Georges Frederic Juillard and Catherine Elisabeth Bruot's children. Are you interested in this, or is it too far out from your line?