I'm throwing in the towel and calling for reinforcements. I'm trying to find the parents of Jean Baptiste Lefebvre (abt. 1847 - 1927) and Alphonsine (Lefebvre) Brouillette (1853 - 1917) who I think are siblings. However, Alphonsine has parents of Ambroise and Marie Rosalier (a surname that PRDH doesn't recognize, so I'm guessing it's her second name) on her death certificate and Jean Baptiste has his father's name as Francis on both his marriage records (which are in New Hampshire). Alphonsine married Medard Lanctot sometime before Jan 1875 when he died, but probably not much before that (an unknown source claims the same year). I searched every parish book in the area where she married her second husband, Charles Brouillette, in 1879 and no luck. The godparents of Charles and Alphonsine's 2nd child, Marie Louise, are Jean Baptiste Lefebvre and his wife Nathalie Sabourin. And a DNA match also supports them being siblings, though it could be 1st cousins also.  New evidence showing that Jean Baptiste may be Alphonsine's uncle, the brother of her father Ambroise.
Thanks in advance.