YooJiSun
The North wouldn’t accept 2 official wives, but mistresses were a norm in medieval times. so if it’s small then I think it’s ok. Just that... I don’t see any long term “prestige” from a marriage with Umber. Maybe a Valyrian and the first princess of Dorne. The one that was leading the fleet of her people from Essos. The pictures you posted about the lands and other do not work. Post them in the comments.