Appendix A To obtain more information about this particular veteran, consult the three volume work entitled Records of Louisiana Confederate Soldiers and Commands by Andrew B. Booth. Cross-referencing showed this particular veteran in this volume of works. Since Booth's relied heavily on individual military records, you should also seek the military and/or pension records at the Louisiana State Archives in Baton Rouge. Any soldier referenced to this Appendix appears in Booth's.
Appendix Q These soldiers are buried in the Army of Northern Virginia tomb located in Metairie Cemetery, Metairie, LA. The individual graves are not marked.
I would look to one of the local newspapers such as the Picayune for an obituary about the date of death. Other than that, I cannot tell you more about your ancestor. He apparently lived out his life in New Orleans. Perhaps he just skipped out on the census takers or worked in a job that kept him out of the city. Who knows. Hope you are able to find more about him. Good luck,
Wayne Cosby