My sympathies, of course. It’s sort of nice to know that there are other American Meuniers out there with similar problems with the elusive pronunciation of our common surname. The way that I’ve resolved it, as I explained in the post, is by acknowledging that there are different pronunciations based on what the speaker’s native language and dialect is. All of the sound files I’ve posted here are accurate pronunciations of Meunier, they’re just different dialects. French speakers pronounce it differently than American English speakers, who pronounce it differently than British English speakers. I pronounce my name according to the dialect that I prefer, and I consider that the correct pronunciation of my name, but I don’t get that upset if people pronounce it differently, because to them it’s accurate for their dialect. I think, though, that your son’s pronunciation and your French professor’s pronunciation are closest to the original French language pronunciation. If you’re looking for a correct pronunciation independent of dialect, either one of those will do.

In my genealogy research I’ve discovered many variations of Meunier, and I believe the Meuniers you are related to are the Meunier dit Lagace family. Good luck in your search!

Best,
Bryson