Yes, everything I sent is online and is found at various websites. I've used mostly census records, parish archives and the Mormon records.
Since I last wrote, I've found a death record for Louis Cormier, the father of Joseph. I had not been able to go beyond Louis. I had last found him in 1920. I also had a census record for 1900 and 1910. Nothing beyond that. The death record gives the following info:
 died 6/27/1920 at Branch, Acadia Parish
 age 70 [born ca 1850 at Branch]
 was a widower [apparently he never married LaPearle]
 his wife was Ozaof Stelly [first name obviously misspelled] She must have been the mother of Moise [bn ca 1884]
 his father was Joe Cormier
 his mother was Meliza Rona [Rona is probably not a correct spelling.]
I also found a death record for a Joseph Cormier who died at age 75 on 12/11/1930. His parents were given as Joseph Cormier and Mulazie Royer [another spelling]. He had to be a brother of Louis.
I then found a death record for Numa Pierre Cormier who died at age 68 on 7/18/1939. His parents were Joseph Cormier and Melaize Royer. He, too, must have been a brother of Louis.
I found the 1880 St. Landry census for Joseph Cormier.
Joseph Cormier 50
Marie C. 15
Pierre N. 10 [Numa Pierre]
I can't find this family in 1870 and 1860. The mother is too young to have had Louis and Joseph. They may be already gone from home in 1880, but that age for Melazie "worrys me". I was hoping to find that in 1860 and 1870, she was older.
I can't find anything on the Stelly woman, but she would not be your ancestor since LaPearle Doucet was Jospeh's mother. I also have not yet found anything on Melazie Royer.
I'll see what else is out there.