Have you a copy of his newspaper obit? It may have where he is buried.
I found the following...
Death date: 1900-06-16
Age: 45 years
# Times Democrat, 1900-06-17, Pg. 3 col. 6
Here is a website with Plaquemines Parish cemeteries...http://www.la-cemeteries.com/Cemeteries%20Plaquemines%20Tabl...
Good luck on your search.