From A Wiki of Ice and Fire
|Born||In 40 AC|
|Died||In 54 AC, Dragonstone|
|Book||Fire & Blood (mentioned)|
Cassella Staunton was a noblewoman from House Staunton during the reign of King Jaehaerys I Targaryen. She was the daughter of Lord Staunton of Rook's Rest.
Cassella was pretty.
At the age of fourteen, Cassella became a companion to Princess Rhaena Targaryen on Dragonstone in 54 AC. She died at the end of the year. At first, it was thought she had died of an illness. Later, it was revealed that she had been poisoned by Androw Farman using the tears of Lys, who had grown jealous of his wife Rhaena's friendships with her ladies and weary of their mockery toward him.