Jon Snow

Jon was introduced as the illegitimate son of Ned Stark, Lord of Winterfell in the North of Westeros. Knowing his prospects are limited by his status as a bastard, He joined the Night's Watch, who guard the far northern borders from the wildlings living beyond The Wall. Actually he was born Aegon Targaryen, the legitimate son of Rhaegar Targaryen, firstborn son of the Mad King, and Lyanna Stark, therefore possessing a stronger claim to the Iron Throne than Daenerys Targaryen.