I agree, it's difficult when all you have are transcriptions, although the people who did the work have good repute for this sort of thing.
Just went looking for Saint-Martin-du-Petit-Niort, now known as Mirambeau, for which there are records available online, collection du greffe, no table and there are no names in margin to make things easy, one has to read through each record to figure out the names even. Added link in research notes, for anyone brave enough to go through them. Even the presence of the name Bardin would be more than we now know.