is the seventeenth King of Rohan and the last of the royal house of Eorl. Théoden is the oldest song of Thengel
and became king after his father was killed in TA 2980. When his sister, Théodwyn
, and her husband were killed, he adopted their children Éomer
Once the time of the War of the Ring
had arrived, Théoden had been King of Rohan for nearly 40 years. He grew old, tired, and became misled and controlled by his chief advisor Grima
. Grima was actually allied to Saruman
. Théoden's loose grip of the throne, along with deteriorating health due to poison, allowed Grima to create an increasingly tight hold over him.
would help Théoden break from Saruman's control. Once his mind was his own, he commanded his nephew to be released and called the Riders of Rohan
into battle against Saruman.