[messiahgov]

Thanks for the answer! I will try that later and search for the chest again. Maybe it's respawned or will respawn after I complete another quest or something like that. If all fails, the following is the item code: addon2_quest_odin_banner

So item addon2_quest_odin_banner should do the job if anything else fails.

EDIT: Adding the item with the console works. The quest will not register properly, but you can go to Asvald again and with the Quest Odin Banner you can complete the quest! The part with finding any clue about the son will stay black, but the quest is complete.