I think "Fontainenot" should be spelled "Fontenot".

Google gives 104 hits on "Fontainenot" and most (if not all) of them are quotes from the lyrics of JAMBALAYA (and probably errors).

Likewise, 3 hits on "Fontainot"…

And 1,110,000 hits on "Fontenot." There are numerous places and people named Fontenot.

Not that it makes much difference when you're singing.