HI I am related to you through George, his brother Sebastien was my great great grandfather and yes thier parents were Joseph and Catherine (Ott)
I have finally located a reference to Joseph and Catherine in Soufflenheim in a record for a death of an infant child but nothing else (except a million other Erneweins) to show them in this town in Alsace. I think I am getting close to cracking this though as I have pieced together a bunch of old research and am waiting to confirm a relation to Joseph through a Modes Ernewein.
Sebastien married Theresa Anstett (a sister or Helen)
I am located in London Ontario, how about you?