The Dark Elf tribes

Dokkalfar, ruled by King Ganger, dwellers of the great depths. Svartalfar, ruled by King Andarvari of the Niovallir dark fields. Myrkalfar, ruled by the dread Jotunn Nott, the fell queen. There locations marked on the map.
King Andarvari, a great mage, has been located as hiding in the Dragonhold.
Queen Jotunn Nott, a vampire, has been located as with her people.
Nothing is known about King Ganger or his whereabouts.