You're right, I hadn't been there in years and did a cursory search for the name and found that one, I didn't know it was a dungeon. Both those names sound right, but it seems like there was another too. I'll do some more digging them move it to the right place.

Isn't the Cursed Swamp a dungeon NW of Shoushi? When was this area referred to as the cursed swamp? As far as I know, its only been called the Blackmire Swamp (as labeled in the original manual map), and perhaps a portion of it is the Greenmire Swamp.