Margaery Tyrell

Margaery Tyrell is a character in Game of Thrones. She is played by Natalie Dormer and is expected to debut in the second season.

Margaery Tyrell is the daughter of Lord Mace Tyrell, the ruler of the Reach, one of the constituent regions of the Seven Kingdoms. She is close to her brother, Ser Loras Tyrell, the Knight of Flowers.

In the books
In the Song of Ice and Fire novels, Margaery is the unwed daughter of Mace Tyrell, one of the most powerful lords in Westeros. Many houses and eligible lords want to marry their sons to Margaery and gain an alliance with the formidable House Tyrell, but Mace has been holding out for the most favorable match possible.