Eddis, Attolia, Sounis

I thought it was that country was called after whatever the ruler was called at the time. So, since Helen was crowned as Eddis, in deviation from how queens are usually crowned and at the insistence of the Minister of War, the country was called Eddis. Since Irene was crowned as Attolia, rather than Attolis, then her country is called Attolia. If Sophos had been Sophia, then Sounis would have turned into Sounia upon her uncle's death.

Eddis is the exception there, not Attolia.