[@Grijs] Interesting that you seek [i]my opinion[/i] on that. I think the Chlotars are described as a bit brutish and war-obsessed in their initial description but in the expanded lore below they come across with more of a righteous zeal that's actually quite attractive. Aside from addressing that discrepancy, I think they're in a good place. The Lamperts I think suffer from a descriptive identity crisis moreso. Initially, it is made out as if the entire culture revolves around cursing God and seeking his ultimate demise. Later as you read into the expanded lore, this seems to be a fixation only of the king. The rest of the people are a hardy atheistic population just happening to live under a borderline-deranged, tyrannical leadership. That latter scenario I think is a bit more appealing and provided there's enough player influence in the Lampertian nobles' court to temper the king's bad behavior, they're a force to be reckoned with. I would also say that you mentioned the king having a daughter. I would strongly advise having a basic character framework for her done (or commissioning her out to someone), because she might come into play heavily.

Now for the fun stuff, exotic concept in brief:
[indent]Rothgar - Grandmaster at Arms of Lambertia, advisor and protector to the High King
    [i]Chlotarian by blood, Lambertian by heart[/i]
-Originally trained with Chlotar master swordsmen in the art of dual-wield speed fighting , but later banished from the tribe's lands by the Chlotar Inquisition (seems like something they'd have) for his absence of faith.
-Having more in common with Lamberts than his own pious people, his training was completed here after many years and many weapon proficiencies gained.
-Proficiency as a weapon master gains the favor of a lord; he ascends through the ranks of the garrison leadership.
-Favor is gained with the king, who replaces that noble with him (swords are more valuable than tongues) as both a court member and personal guard.[/indent]
I know its probably a hard sell getting Lambertian leadership to put any trust in an outsider no matter how loyal they are ... but it would no doubt be very cool. I haven't written enough down to make retooling the character a pain in the ass when I inevitably have to. :P

Oh and I caught one more thing while writing that. The CS lists 5 tribes, but only 4 are talked about in lore. Who are the Radbouds and what makes them interesting? (or snip that before anyone else notices)