In point of fact, there were no Duskwights before Gelmorra and no real distinction made between the two tribes until after the pact and fall. Duskwight seems to be a catch all term for those Elezen that chose not to live on the surface under the yoke of the Elementals. This seems to have gone on for a while until Gridania sacked Gelmorra and scattered the Duskies. In short, the separation was caused by the pact, and the hateful schism caused by the attack at some point later. Duskies scattered and went everywhere as refugees, but all roads lead back to Gelmorra as far as lineage in a way back past fashion.
