There is a book called "History of St. Charles" with the following information about your g-g-grandfather Joseph R. Beaubien. It says he married Amelia Roberts in 1869 and had 11 children, 5 of which were still alive in 1932. The 5 are Mrs. Steven (Lillian) Raymond of Wyandotte, Mich; Mrs. Ben (Jennie) Hausfeld of Dayton, Ohio; Mrs. George (Alma) Duvall and Lafayette of Monroe, and Homer of Pointe Aux Peaux.
There is a small biography on Homer and it says he married Lottie Labeau in 1902. He had 4 children - Mrs. Clarence (Carrie) Manor, Florence, Emma and Floyd.
My g-grandmother was also a Beaubien from Monroe - Ella - born to William son of Joseph and Mary. But not your Joseph. I am trying to locate information on who my Joseph's parents were. The only thing I know is Joseph and Mary's children's names and that they lived in Berlin Township of Monroe County in the 1880's. Also that Joseph was born abt 1822 and Mary was b. abt 1832. Any info you came across looking for your Joseph may help me identify mine.
Thanks - my e-mail is firstname.lastname@example.org