Introduced in 1996's A Game of Thrones, Daenerys is one of the last surviving members (along with her older brother, Viserys III, the "Beggar King") of House Targaryen which, until 14 years before the events of the first novel, had ruled Westeros from the Iron Throne for nearly 300 years before being ousted.
Daenerys Stormborn of House Targaryen, the First of Her Name, Queen of the Andals and the First Men, Protector of the Seven Kingdoms, the Mother of Dragons, the Khaleesi of the Great Grass Sea, the Unburnt, the Breaker of Chains.