The miscellaneous quest section needs work. Not all quests are added to it, and ones that are there don't always get a quest marker.
I have a letter from Gorm, to aldis, from mortath or wherever. I have no idea who aldis is or where he is. Thankfully I remember who Gorm is, but he won't repeat his information. So unless someone here remembers this part, I will never be able to do this quest.