A trait that I enjoy in books and movies is when a character is very loyal to another character or faction that doesn't border on the level of zealousness or brainwashing, and I'm trying to find some examples of undying loyalty in the ASOIAF books. The love that the mountain clans hold for House Stark is a good example of what I'm looking for as they're marching in the middle of winter with the forces of Stannis for "Ned's little girl" out of love for Ned. Davos's loyalty to Stannis is also grea