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

Tyrion: Let me give you some advice bastard. Never forget what you are. The rest of the world will not. Wear it like armor, and it can never be used to hurt you.
Jon: What the hell do you know about being a bastard?
Tyrion: All dwarfs are bastards in their father's eyes.

A girl is Arya Stark of Winterfell and I’m going home.