Avarran

Avarran Carcarron is the lord of the Twinned Duchy, husband of Keria and father of Aelinian. When his high sorceress - Ashura Aether-Born dies, Avarran takes some responsibility over her children - Jaya and Jareth - who were being raised as close to his son as blood siblings. Soon he sends Jareth off to Synedel, the mages's college, while Jaya remains in Carcarron and trains as a warrior. When his son is grown, he gives him Rivenstone to govern on his own, and appoints Jaya as the captain of his guard. Soon Rivenstone is attacked by Elyos and his son dies (or so everyone thinks). He orders Jaya's arrest and keeps her in prison for months. At the trial he, unexpectedly votes for mercy, granting her lifetime of imprisonment in The White Barrow. The trip to the Barrow goes wrong, almost the entire escort is slaughtered and the prisoner gone. The only survivor says that a group of Elyos attacked them and took Jaya with them. Avarran uses this news to convince everyone that she's a traitor, defector to the Elyos and gives an order to kill her on the spot if she is ever spotted in Carcarron again. Some time after this he dies. Circumstances of his death are unknown.

Trivia
The author's words has suggested that Avarran wanted to keep Jareth away and that was the reason he sent the child to Synedel.