Cersei Lannister is the only daughter of Tywin Lannister, former Hand of the King and the richest man in the Seven Kingdoms. Her father had initially hoped to marry her to Rhaegar Targaryen, but that offer was refused by the Mad King Aerys. She is the wife of Robert Baratheon and mother of his three children. While she is close with her twin Jaime, she can barely tolerate her brother Tyrion.
She has odd cravings, our sister.- Tyrion Lannister