There was a Creole Fire Company and various incarnations of a military company during the war. The Creole Guards were organized in 1861 and again in 1862. Both served for a limited period of time. I believe it was 90 days. The Native Guards were organized in 1865. All of these companies probably had the same core group of men but with different officers.
Mobile area? No, but I need to visit there someday.