You are on a quest to slay the dread Ice Golem Inverulezzar for Alarke, Duke of Karthwasten Hall. Inverulezzar's lair is said to be west of Karthwasten Hall, and you must have killed the beast by Middas, 23rd of Sun's Height.
How do I go about tracking down this ice golem? No new dungeon got added to the map of Skyrim... er, never mind, just found it way the hell EAST of Karthwasten Hall.
Edit:
Duke Alarke has hired you to rescue Sillia Jurgeldsen, the Duke's youngest daughter who is imprisoned in the Fenrarik's Fortress, west of Karthwasten Hall. You must have her back in Karthwasten Hall by Tirdas, 15th of Last Seed to earn the 1518 gold reward.
Once again, His Grace the Duke can't tell East from West. Fenrarik's Fortress is over near the east edge of Skyrim (and not far from Inverulezzar's Lair), while Karthwasten Hall is not far from the western border of Skyrim.