Population Migration / Travel
Chased by a mysterious horror, the Goblins migrate from across the sea. Known to the Humans, they are accepted, to the Dwarves indignation.
The Goblins and humans were allies before the dawn of time. The King's line remembers their service, and when the last of their house ask for help 234 years later, Humanity answers. The Dwarvish mountains are split, and the Goblins are given a new home. Though true sailors, to many of their kind fell to a beast of the deep during their migration, and the Goblins vow to live in the mountains, and touch the sea no more.