Cerelle Lannister was Lady of Casterly Rock and head of House Lannister. She was the only child of Lord Tybolt Lannister and Lady Teora Kyndall.
In 212 AC, at the age of three, Cerelle became the ruling Lady of Casterly Rock. Her uncle, Gerold Lannister, served as her regent. Cerelle's rule would last for less than a year, as she herself would die in 213 AC. As her death had occurred at such a young age, it was whispered that her death, and the death of her father had been caused by Gerold, who, after Cerelle's death, became the ruling Lord of Casterly Rock.