It's hard for us to help you with so little information. So far all we know is a name (C. E. Andre), and that it possibly dates from 1864, and that it is apparently small in size.
This handgun could have been made in the United States or some other country. It may be a single-shot, revolver, or something else. It may be chambered to use a metalic cartridge, or be loaded from the muzzle. The name may relate to the maker, a distributor or dealer, or a former owner.
We always try to be helpful, but a much more complete description, or better yet - a clear picture - is going to be necessary before we can go much further.