Game of Thrones isn't a family show, but it is, at times, about family. The bloodlines that connect the franchise's main characters confer tremendous power, but they also create unique allies and enemies across the Seven Kingdoms. From the endless squabbling of the Lannister siblings to the unshakable resilience of House Stark, the landed gentry of Westeros dominates Game of Thrones. House Targaryen has diminished as the story begins, but their quest to Westeros and subsequent conquest changed the continent.