Dealing with Acadian ancestors can get really confusing. Yes, according to his death record, Louis Cormier's parents were Joseph Cormier and Melasie/Melazie Royer. They married in 1849 and Louis was born ca 1850.
The first Comeaux was Oliva, the wife of Edmond Carothers [or Credeur]. They married 2/10/1892. It is in need of confirmation with Father Hebert's books, but I think that their daughter, Elle, was the Elise/Elice who married Joseph Cormier. With the confirmation of the 1892 marriage, you can be sure that Oliva's parents were Desire Comeaux and Sarah Jane [unknown]. They would have married in the late 1850s.
The second Comeaux is Modeste Comeaux, the mother of Edmond Carothers/Credeur.
Hope this clears things up.