tbh that was common in MP games for a while maybe its just the game getting more popular.

i dont know enough about society in that specific  period to know if he was right. Might well be one of those recurring issues.

I wouldn't use Hibernia, what have the Romans ever done for them? Erin is a modern English form of Éirinn, the dative of Éire, which comes from Old Irish Ériu, still not old enough, but since it was just the name of a map maybe that wasn't much of a problem.

For this timeframe you could use the Roman name Hibernia. Or some earlier reconstructed Celtic form (Iuerion, Iuernion, Īweriyū).

@rossenburg The S1 will be a playable mission !  It is a way to showcase the project from a technical perspective to help other projects !