Finally, a step forward! The console finally accepts the character name, RebelClub gave the right clue (+rep!), you have to:
type the underscores between the name and the number (if any) and between the "of" and the location (if any) but leave a blank space between those two. The correct form is: "Agesipolis_III of_Sparta"
Hopefully, this will help other people with the same problem.
For now, I am stuck with the next problem: The console doesn't accept the trait "Brave" now

but I'm going to figure that one out eventually...
P.S.: The trait is "Brave1", no space and it's *not* optional to leave the number.
Oh, the joy! I had refused to continue my Sparta campaign with my generals being named cowards for no reason...


