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You mean that it is automatically the leaders own name?
Doesn't [default] do this?
I don't think that there is a way. The game gives the leader your name by default because you are the leader of that civ.
For instance, when I play as Ragnar, his name is Natasha, not Ragnar.
But you would like his name to default to Ragnar, right? I'm not sure the game will do that.