Came across him in a Felicien David biography (Dorothy Veinus Hagan), where his ode symphony "La Poems de la Mer" was mentioned in conjunction with David's "Christopher Columbus" - by which he was apparently influenced. Not a lot to be found about him, web-wise... apart from a very modest wikipedia page:
https://en.wikipedia.org/wiki/Jean-Baptiste_Weckerlin
I've never heard of this composer, so I started digging a little on Spotify.
There is a recording available of his operetta "La Laitiere de Trianon", but it's an arrangement for piano and singers.
IMSLP lists it as a piece for vocal soloists & orchestra though, so maybe it's a different arrangement that got released.
Arkivmusic describes the piece as an "opérette de salon".
Weckerlin (or Wekerlin) was mainly known as the librarian of the Paris Conservatory, less as a composer, but still he was quite prolific. His Wikipedia page is really terrible, not well written and rather superficial. I've just done a few formal edits, but I will expand it in the next few days. Check back next week or so.
Nice, appreciated.
His name shows up in the Bibliographie nationale (BdlF) often enough during his lifetime when I was searching for other things to suggest that he was fairly prolifically published.