Game Of Thrones Series
Queen Cersei I Lannister is the widow of King Robert Baratheon and Queen of the Seven Kingdoms. She is the daughter of Lord Tywin Lannister, twin sister of Jaime Lannister and elder sister of Tyrion Lannister. She has an incestuous relationship with Jaime, who is secretly the father of her three children, Joffrey, Myrcella and Tommen.
After the assassinations of Joffrey and Myrcella and Tommen's suicide in the wake of the destruction of the Great Sept of Baelor, Cersei assumed the throne under the name of Cersei of the House Lannister, the First of Her Name, Queen of the Andals and the First Men, Protector of the Seven Kingdoms
Cersei is the only daughter and eldest child of Lord Tywin Lannister and his wife Joanna Lannister, who was also his cousin. Tywin is the head of House Lannister, the richest man in the Seven Kingdoms and Lord Paramount of the Westerlands. The Westerlands are one of the constituent regions of the Seven Kingdoms and House Lannister is one of the Great Houses of the realm. Cersei is the elder twin of Ser Jaime Lannister and the elder sister of Tyrion Lannister. She was raised in privilege in the family seat of Casterly Rock. She is noted for her great beauty.
Cersei's mother died when she was four years old, after giving birth to her younger brother Tyrion. Like her father, Cersei has always blamed Tyrion for her mother's death and deeply resents that her mother died so that Tyrion would be brought into the world. As for Cersei's father Tywin, he was constantly away from home during her childhood and teenage years, serving as Hand of the King at the capital, with only infrequent visits back to his seat at Casterly Rock. Coupled with the death of her mother, this meant that Cersei and her two brothers were primarily raised by servants attached to House Lannister. She began an incestuous relationship with Jaime in her youth which has continued despite her marriage. While Cersei has had other partners, Jaime has always kept himself strictly for her.