Seserakh is the King Thol, High King of the Kargad land's daughter, and such high princess of the Kargish. She is sent to King Lebannen as a gift by her father, who seeks to unite the two in a union that will secure a peace between their two nations, and also mean that he (King Thol) has some direct line of power over the High Kingship.
Used as a pawn and treated as inferior all of her life, Seserakh at first fears King Lebannen and the people of the Archipelago, thinking that they will steal her soul if she gives them her true name and she will not be able to be reborn after her body dies. Gradually however, through the friendship of Tenar (who was once High Pristess of Atuan), she begins to learn Hardic (the language of the Archipelago) and becomes braver, casting aside her veils and meeting her responsibilities head-on without compromising her core beliefs. In the story it is actually Seserakh who holds the key to the answers that the rest of the characters seek, in the myths of her people the Kargs.