Game of Thrones Season 6 Episode 02 Home
Unaware that Jon Snow is dead, Ramsay deduces that Sansa would have gone to Castle Black to join her brother, the Lord Commander of the Night’s Watch. Ramsay proposes to his father Roose that they storm castle Black and kill Jon Snow. Maester Wolkan then enters and announces that Walda has given birth to a son, prompting Ramsay to stab Roose, killing him. He then lures Walda and his baby brother into the kennels, where he has them mauled to death by his hounds, thereby securing his position as lord of House Bolton and Winterfell.
ROOSE: Jon Snow is a bastard, not a Stark.
RAMSAY: So was I, Father. Your hold on the North will never be secure as long as a Stark can walk through that door. Castle Black isn’t defended on the southern side. And the few men left are barely men at all. Farm boys and thieves. With a small force, we could storm the castle, kill Jon Snow–-
ROOSE: Murder the Lord Commander of the Night’s Watch? You’d unite every house in the North against us.