Thornmarsh

Thornmarsh is a region somewhere in Black Marsh. The region has had some involvement in the Ebonheart Pact during the Alliance War of the Second Era. Future Vicecanon Heita-Meen escaped from the House Dres Saltrice Fields to end up in the Marsh. After the Second Akaviri Invasion in Central Morrowind, the Pact had formed and some tribes of Black Marsh entered the new Alliance. Tribes from Shadowfen, Murkmire, and Thornmarsh joined the Pact. Although the exact location of the region is unknown it is implied by Vicecanon Heita-Meen that it's somewhere near Archon since rogue Archien Soldiers found Meen and other escaped slaves after they reached Thornmarsh.