The only child of Lord Selwyn of Tarth, Brienne was never like other women—very tall and ungaily as a girl, and with a very plain appearance marked by a broad, coarse face with many freckles, crooked teeth, and more. Her father let her train at arms, due to her size (some 6’6” feet) and strength. When Lord Renly called his supporters to him at Highgarden, Lord Selwyn sends Brienne with the Tarth contingent. A skill warrior, her armor is enamelled blue, one of the colors of Tarth which is known as the Sapphire Isle for the blue of its waters.
The actress cast in the role is older than Brienne in the novel, and certainly much more beautiful to look at—it will be interesting to see what makeup does with her appearance. She is also certainly nothing like so broad and muscular as Brienne is described.
Brienne is introduced by defeating Ser Loras Tyrell in a melee, and requesting as her reward a place in Renly’s guard, which he allows. It is clear that she loves him, a fact that Renly believes will make her utterly trustworthy. Renly is killed by a sorcerous shadow, however, and she is blamed and she escapes Renly’s camp with Catelyn Stark. Lady Catelyn takes her into her service and takes her to Riverrun. Following Jaime Lannister’s bloody escape from confinement, the mood in the northern camp leads Catelyn to free him, fearing that he will be murdered. To guard him and make sure he reaches King’s Landing and fulfills his word to return Catelyn’s daughters to her, Catelyn sends Brienne with him.