The Ghostlight Marsh is named for the will-o'-wisps that dwell within its murky depths. The willow-o'-wisps are not thought to have always been a part of the marsh, in fact they are believed to be the results of a single great sacrifice made within the marsh. This sacrifice was made in 4237 AR when the orcs of the Hold of Belkzen pushed their southern borders further into Lastwall. While most fled in the face of the orc horde, a few stood fast defending their homeland. One of these groups was the Council of Thorns who opposed the devastation the orcs were wrecking on the land. They were gradually forced back to the swamp between the Flood Road and the River Esk, their final act a sacrifice of themselves in a bloody ritual. As their blood mingled with the swamp water, dozens of lights rose from the murky swamp. The willow-o'-wisps have guarded the Ghostlight Marsh ever since though rumor has it they do not attack those in tune with the natural world.