Here's what I have put together thus far.
Far to the north (FAR to the north) is a Far Land called Valhyr, the Frozen Continent. The population is mostly bladeling, but a number of goliaths, half-orcs, goblinoids and dwarves call the continent home. It is mostly a warrior and tribal culture with a few civilized port cities. By and large, the various races band together to combat both the harsh climate and the frost giants, who are a constant threat to the smaller, squishier races. It was a land of danger, but it was relatively stable. Until the day the sky opened up and the angels came.
When angels descended to Valhyr, they brought with them a phenomenon known the "Einherjar". Everyone who knew how to use a weapon, every hunter, every bodyguard, every tribal chieftan, went suddenly and irrevocably insane. The Einherjar cut down everything around them, seemingly only focused on destruction and ruin. Worse still, the angels helped them in their slaughter, leading them in droves across the landscape cutting down everything in their path. Sensing the disarray, the frost giants attacked in force. All of Valhyr was suddenly at war, and the few remaining humanoids not caught up in the bloodlust found themselves in the middle of the conflict. Desparate, they loaded into ships and fled the continent.
That was fourty years ago. Many of the refugee ships found their way to Daunton, where they were welcomed with open arms. Dauntonians sympathized with the Valhyrans; their conflict reminded them of their own flight from Allaria. Every now and then, a new ship arrives in Daunton's port, filled with bladelings and goliaths that were born on the ship and don't even know what they were fleeing from. Einherjar ships appear too, pulling in to Daunton and unloading dozens of blood-crazed warriors intent on killing as many living things as possible before being slain by the local militia.
So that's where bladelings come from. Also goliaths and half-orcs. It's certainly Norse-inspired; they are literally fleeing from Ragnarock.
What do you think?