Theon Greyjoy - A Wiki of Ice and Fire

Theon Greyjoy is a member of House Greyjoy and is the sole surviving son and heir apparent of Balon Greyjoy, Lord of the Iron Islands. At the end of Greyjoy's Rebellion, Theon was taken to Winterfell as a hostage and ward to Lord Eddard Stark. He becomes a POV character in A Clash of Kings. In the television adaptation Game of Thrones, he is played by Alfie Allen.[13]

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