Theon Greyjoy is the son of Lord Balon Greyjoy. When he was young, he was taken by Eddard Stark as a hostage, and raised with the Stark family.

Game of Thrones Quotes

Baelish: Do you know what the realm is? It's the thousand blades of Aegon's enemies, a story we agree to tell each other over and over until we forget that it's a lie.
Varys: But what do we have left once we abandon the lie? Chaos, a gaping pit, waiting to swallow us all.
Baelish: Chaos isn't a pit, chaos is a ladder.

I will hurt you for this. A day will come when you think you are safe and happy, and your joy will turn to ashes in your mouth. And you will know the debt is paid.

Tyrion Lannister