Myrcella Baratheon

From A Wiki of Ice and Fire

Princes Myrcella Baratheon is the second oldest of the royal Baratheon children. She is delicate, beautiful, and courteous. For her age, she displays courage, a strong will, and high intelligence. She is eight at the beginning of the series.

Like her siblings, Myrcella is the product of incest between Cersei and Jaime Lannister. She was sent to Dorne as part of an agreement with House Martell to ensure their support for Joffrey during the War of the Five Kings. She is betrothed to marry Prince Trystane Martell when they come of age, and by all reports the two get along well. Myrcella took a liking to the spicy food of Dorne and quickly learned Cyavasse, a local game. She now beats Trystane more than he does her.

[edit] Arianne's Coup

To get revenge against the Lannisters for the deaths of Elia Martell and Oberyn Martell, Arianne Martell schemed to make Myrcella Queen of the Seven Kingdoms after Joffrey's death. According to Dornish law an elder sister inherits before her younger brother, which would make Myrcella the rightful queen. But as Dornish law applies only in Dorne and not in the succession rules of the Seven Kingdoms, most people would not see her as the legitimate ruler.

Arianne and a small group of friends traveled with Myrcella from Sunspear through the desert. When they came to their destination, Doran Martell's guardsmen of were waiting for them. Their conspiracy had been betrayed. Myrcella's guard, Arys Oakheart attacked the guardsman but was killed by their captain. During the chaos, Ser Gerold Dayne attempted to kill Myrcella to force Doran Martell into a war against the Lannisters. He failed to kill her, but Myrcella lost an ear and received a hideous facial scar.