House Targaryen
House Targaryen of Dragonstone is a noble family of Valyrian descent
who once ruled the Seven Kingdoms of Westeros. It eventually became
the first royal house of the Seven Kingdoms, as House Targaryen of
King's Landing.
House Lannister
House Lannister of Casterly Rock is one of the Great Houses of Seven
Kingdoms, and the principal house of the westerlands. Their seat is
Casterly Rock, though another branch exists in nearby Lannisport.
House Baratheon
House Baratheon of King's Landing is an extinct cadet branch of the
original House Baratheon of Storm's End. It had been the royal house
of Westeros since the defeat of and exile of the Targaryen dynasty
following Robert's Rebellion
House Stark
House Stark of Winterfell is a Great House of Westeros and the royal
house of the Kingdom of the North. They rule over the vast region
known as the North from their seat in Winterfell. It is one of the
oldest lines of Westerosi nobility by far, claiming a line of
descent stretching back over eight thousand years.