Hello Paul & Julie
I too am trying to get more information about my great-great grandfather Louis Ollier, born in 1845 in the Alsace-Loraine region of France. His family came to the US (Cincinatti, OH) in 1850 and pretty much settled there. Louis was a barber and he moved to Batesville, Indiana with his young family in 1883; later returning to Cincinatti in 1908 where he died in 1928 at the age of 83.
As you can see, I have a lot of details about Louis, but I haven't been able to nail down his parents name. I do know he had at least 1 brother named John M. Ollier.