Cersei Lannister is in England.
Introduced in 1996 's A Game of Thrones , Cersei is a member of House Lannister , one of the wealthiest and most powerful families in the kingdom of Westeros.
Most of the story takes place on the continent Westeros , in a large political entity known as the Seven Kingdoms.
The fictional world in which the A Song of Ice and Fire novels by George R. R. Martin take place is divided into several continents.
