After talking with Thrayne Iron Heart, he will ask you to find his brother Erland at the Stonecutter clan and tell him to return home.
Upon your arrival, you find the place overrun with Undead. Eventually you find Erland and he leads to a laboratory where you can pick up more items and find a mysterious book detailing experiments on raising the dead.
When you return back to the Wheel clan you can tell him that his brother will return and can badger him for 200 gold (if you are evil, you can tell him that he is really upset and blames Thrayne for his father’s death and will be coming back to kill him!).