Although I do not yet have the parents of Elizabeth, Emaline, and Mary Barbeau, I have turned up three males, who may also be brothers of the above : Louis Barbo, Dominic Barbeau and John Charles Barbo/Barber. I also have wives for these men, if any match any of your family. These men were all in the Defiance, Ohio area. As for Degrosselier, they seem to have used their "dit" name: Prosper: I now have a Gabriel Prosper, with daughter Louisa, and a Jenne Prosper who married a Thos. Quinlan. I am awaiting a few more records on the last one, and need to do census work on all the aboe, 1860-1900, I also have Leo Barbeau, son of Dominic, and the names of Leo's 4 married daughters. Let me know if you can connect to any of these people. Have not as yet found Dumas.