I just finished watching season three of Game of Thrones. In this season, many characters are seen referring to the ongoing war as the war of five kings. I haven't read any of the books, only watched the TV series. As per the TV series these kings IMO are:
- King Joffrey who take over iron throne after his father King Robert Baratheon
- King Robb Stark - King of the North
- King Stannis Baratheon
I failed to determine who the other two kings are. Who are they and what are their claims?