I have been playing VC for quite a while and quite enjoy it. I would however point out a few mistakes. a viking would never have thought to battle one of his gods, he/she would have fought alongside them and the Sigel of Odin is not Mjolnir, that would be the Valknut (note the spelling). Mjolnir is better known as Thor's hammer. I am not trying to be a dick, but as a follower of Odinism and a Vitki, I wanted to point out these small inconsistencies.
Well you have to take note that this is in fact a game and do not reflect the actual reality or myths. You cannot keep a straight line as a Viking theme game without, actually, include viking Gods/items, etc. You have a good point, but it was not necessary. Cheers!
what clubber said is right. the Devs probably didn't expect the game to last this long, so they never anticipated they would need to use some names, locations and so on, for so long. that's why there are and will continue to be game inconsistencies.