Now I know this isn't directly told in the game but it is strongly suggested that Raubahn and the Sultana are actually lovers.
Obviously they're in a good and healthy loving relationship. Raubahn is willing to sacrifice himself for Nanamo and Nanamo strongly cares about Raubahn.
But even the strongest love in the world has to land on a reality check. How does it make sense practically? How do they have children? We know they have to continue the Ul Namo line so I'm concerned they're physically unable to have children. Or is this why Nanamo wanted to abdicate?
Edit: Please stop writing dirty things.... ewwwww. I was wondering if Highlander genes and Lalafellin genes can mix to create a baby, and if so what it'd be like. We've seen NO mixed race Hyur/Lalafell character yet so it wouldn't be too hard to entertain the idea that maybe it's genetically impossible.