|Full Name||Cerion Lannister|
|Other Titles||King of the Rock|
|Royal House||House Lannister|
|Books||The World of Ice and Fire (Mentioned)|
Cerion Lannister was a King of the Rock of House Lannister of Casterly Rock. He extended the rule of the Kingdom of the Rock as far east as the Golden Tooth and its surrounding hills, defeating three lesser kings when they made an alliance against him.