Noble houses dominate the plot of Game of Thrones. Most of the key characters have the station, wealth, and power of a meaningful name behind them. However, not all dynasties are created equal. Houses Stark, Lannister, Targaryen, and Baratheon command the majority of the screen time. Some families have a castle, land, subjects, and resources, but very little time to explore it all. Look at House Mormont of Bear Island, a dynasty that fell apart at every stage.