I hope you are still working at this! This was posted a while back and Im not sure if you found what you were looking for. Everything I have has lead me to this line of Codys.
Rome (Rhome/ Romolus) Cody 1873 (mother Julia a Dupriest)
Robert Dale (Dean) Cody 1843 (mother Nancy Walker)
Elias Cody 1813 (Mother Elizabeth Adams)
James Cody 1782 (Mother Catherine "Canteen" Donelson(Donaldson)
Edmond Archdeacon Cody 1754?
James Archdeacon Cody 1718?
This is where is gets confusing for me! James' father was also named James [I think] and they were both married to sarah womacks [I think]. And this is also where it goes back to Ireland. Kind of a dead end for me, if anyone else has anything my ears are open.