The dwarven gods true names can only be known by dwarves. They are referred to by nicknames in the presence of non-dwarves. I.E. Gudurran( Allfather) Baenna ( Hearthmother) Dudrak ( Ore), etc. No torture or magic or direct intent can reveal their true names to non-dwrves.
There are crimes for which a man is not killed, but chased into the wilds, away from his home and country, to not return or be killed on the spot. In one culture is the condemned mutilated, and even his vocal cords are damaged so that the voice is unrecognizable to his friends and family. This is the punishment for people too obsessed with their own prestige.