Duchess Tirana is Galandir's sister and heir to the throne. She often refers to events as a big game of chess. At the moment, she is the self-proclaimed Queen of Mirith, after the checkmate against her brother.
She first came to the attention of the public around 425, after being kidnapped by Yadeth, who demanded Mirith's part of the Curio as ransom. Eventually, the defenders of Mirith managed to rescue the Duchess and to kill Yadeth, without knowing that Tirana had been collaborating with the Black Hand for a long time.While still being part of the court, she promoted Beleth to Royal Mage. How she managed to have so much power over the mage and to gain his blind loyalty has never been clear. Beleth paid a high price for that privilege: on the day when the Twins and Elefin came to Mirith to kidnap Serene, Tirana, standing by the side of the King, revealed her true loyalties by slitting the throat of Beleth's daughter, Araine.
Since that day, Beleth swore to find and kill the Duchess. For years, they have played a game of cat and mouse. Both knew that Beleth would be able to find Tirana through a spell contained in the Tome of the Lost. First, Beleth asked for Cecil's help with the tome, but Brigobaen suffered an attack on that same day and a political scandal ensued over the place where the old book should be kept for safety (both Mirith and Andris had claims). Later, when Tirana needed Beleth to work as a slave for the Hand, she lured him by having one of the Twins in disguise coming to the Castle to tell the mage that they had the book (it is unclear from the Twins' letters if Rasha used their magic cloak to take on the appearance of Cecil).
Tirana kept Beleth her prisoner until 430, when the Mirith Vanguard, with the help of Zem Stormbrow , found the Twins hideout in a cave near Duldrus and rescued the Royal Mage. Whether Tirana predicted this visit and even opened to way for Zem to gain the information, it is not known for sure.
One year later, during the Sleeping Moon, Cecil, the genuine one this time, appeared to Beleth in Mirith for the same reason as Rasha would have before: he had found the spell needed to locate Tirana. He announced that it was also necessary to pay a visit to the Centaurs, who had been hiding from humans since the massacre perpetrated by Elefin many years before.
Conveniently for Mirith's interests, the Twins were also ready to rebel against Tirana, as they had been in the past against Elefin. After a long fight, though, Tirana managed to escape with a teleportation spell. But Beleth could still sense her, and with his Black Magic was able to send Ciddia Tigg after the traitor. Some time later, when the expedition had already returned to the Castle, believing that the fight had been lost, Tigg appeared with Tirana's head.
It was only in 438 that the story of what actually happened that day was revealed. Instead of killing Tirana, Tigg threw a magical necklace around her neck to make the Duchess a prisoner. The necklace, prepared by Beleth, encapsulated a strong spell that Tirana would never be able to break on her own. The imprisonment was motivated by the King's insistence in having an heir. Unable to father a child, Galandir decided that using Tirana was the only way to preserve the blood line. The man chosen for the task, it seems, was the late Captain Casden Pernell, at the time just a scout from Mirith. She would later kill him with a single spell, on the day of her revenge.
Tirana was in prison until the day when Beleth succeeded in his experiment to clean himself of the harmful consequences of too many years working with black magic. As he got rid of the void energy, the spell broke, and Tirana escaped. Soon later, the Duchess sought the Twins and together they took over the Black Hand once again. At the moment, it is still unknown what happened to Rem and Uryste.
At the Blue Moon of the same year, Tirana killed Mernias, while most of the citizens were away in the festival of Andris. More powerful than ever after drinking the Centaur's blood, the former Duchess took over Mirith the help of the Twins, and declared herself Queen.