Game of Thrones S00 E154 Histories & Lore: Northern Allegiances to House Stark

"Winter is coming."

Sansa Stark recounts the history of the North, of how it was once unified by the House Stark, of how its principal noble houses swore loyalty to them, and how they guaranteed its independence from the Andals, while she prepares herself from the Wall to confront those who now govern it.