Discovery, Scientific
The remnants of Feyreach are discovered by a group of settlers. More importantly, they find a portal to the Fey underneath the city. They harness the power of this portal in order to rebuild the city.
Stormcage Containment Facility is built on top of the portal in order to conceal it. The people who made this discovery are Aiwin Valsom, Charles Whitemaw, Leremont Laragol, and Johann Godfree. These people would later go on to establish the noble houses of Grim, except for Johann Godfree, whose family became the kingship. The portal under Stormcage would become the best-kept secret in Grim.