Aw crap. Good catch there. This is what happens when you do a reboot and only think you have to make minor alterations and believe you remember all the details...

Here's what we will do: 
No one have to change a thing, the siege of Veiron actually took 20 years (mostly thanks to the awesome power of the early Warriors there), Some of our characters got out of the city early and some stayed until the end of the battle. Doesn't matter in the long run. 

Prince:
Like Vlad says there has to be a few changes.
I have nothing against the mark, to humans the marks appear random, so they can be pretty much anything. But the fact that your character could be possessed by so many is really an overkill. We talked about this, and I was expecting just one demon, which is alright. But the whole demon lord-thing is just too much, Lilith would definitely be one of those demons with the power to kill with a thought.