From A Wiki of Ice and Fire
|Title||Maester at Casterly Rock|
|Book(s)||The World of Ice & Fire (mentioned)|
Beldon writes in detail about the rivalry between Lady Ellyn Reyne, the wife of Tion Lannister, the heir to Casterly Rock, and Lady Jeyne Marbrand, the wife of Tion's younger brother Tytos Lannister.
- The World of Ice & Fire, The Westerlands: House Lannister under the Dragons.