True. And even though I know it's wrong, I always like to think that the Hyperboreans are the Bretons and Celts, and they all worship Apollo.
they might try and Bring roman mythology in, but it might just make it all very confusing. Or it'll turn out C.C's race is the master race everyone worshipped way back in the day, and that's where all religions sprouted from. She is a witch, and if people worshipped her race, then maybe old civilizations got Geass from her race, and became leaders, hence the power of the king thing.