As a genealogical researcher with a lot of French ancestry, I can tell you that Amédée was not an uncommon name in 19th-century Louisiana. Although the double-e ending of the name is feminine, it seems to be the preferred spelling. I have yet to come across a woman with this name. My great-grandfather's brother was named Amédée, and was the manager of the family's plantation when he died unexpectedly in 1862.
https://de.findagrave.com/memorial/104463987/adam-am_d_e-domingue
https://de.findagrave.com/memorial/160213280/charles-am%C3%A9d%C3%A9e-commagere