So, thought the nun. That is how it is going to be! Well, his family has a right to those titles, though they have rarely used them.

Taking his wife aside, John Cantacuzene spoke quietly with her for a few moments, then kissed her tenderly. Then he spoke with his daughters.

“If I am a princess,” asked Helena, “then I must marry a prince. Mustn’t I, Father?”

“You are a princess, my pet, but I mean for you to be an empress some day.”

Helena’s blue eyes widened. Then she asked, “And shall Thea be an empress also?”

“I have not yet chosen a husband for Theadora.”

Helena shot her little sister a triumphant look. “Why not marry her to the Grand Turk, father? Maybe he likes purple eyes!”

“I would never marry that old infidel,” exclaimed Theadora. “Besides, Father would never do anything to make me unhappy. And that certainly would!”

“You would have to marry him if Father said so.” Helena was unbearably smug. “And then you would have to leave the city! Forever!”

“If I married that old man,” countered Theadora, “I should see that he brought his army to capture the city. Then I should be its empress instead of you!”

“Helena! Theadora!” scolded Zoe gently, but John Cantacuzene laughed heartily. “Ah, chick,” he chuckled, ruffling Theadora’s hair, “you really should have been a boy! What fire! What spirit! What a damned logical mind! I shall find you the most advantageous husband, I promise you.”

Bending, he kissed his two daughters, then strode back out through the gate, mounting his horse, he waved and rode off, confident that his family was safe. Now he could begin his battle for the throne of Byzantium.

It was not an easy war, for the population of Byzantium was torn by loyalties. Both the Paleaologis and the Cantacuzenes were old, respected families.

Should the people support the young son of their late emperor or the man who had actually been running the empire for years? Too, there was the deep suspicion, kept alive by the Cantacuzene faction, that Empress Anna of Savoy intended to lead Byzantium back to hated Rome.

John Cantacuzene and his eldest son left the city to lead their forces against young John Paleaologi. Neither side would harm their beloved city of Constantine. The war would be fought outside the capital.

Though Cantacuzene preferred diplomacy to warfare there was no choice. The two dowager empresses sought his death, and what should have been a quick victory turned into a war of several years’ duration while the fickle Byzantines constantly switched sides. Finally, John Cantacuzene sought aid from the Ottoman Turks who ruled on the other side of the Sea of Marmara. Although the mercenary soldiers of Byzantium fought well, Cantacuzene could never be sure how many he might lose to a higher bidder. He needed an army he could depend on.

Sultan Orkhan had already had a request for aid from the Paleaologi side. Unfortunately, they had offered only money, and the sultan knew their Imperial treasury was empty. John Cantacuzene offered gold, which he really had; the fortress of Tzympe in the Gallipoli peninsula; and his little daughter, Theadora. If Orkhan accepted the offer, Tzympe would give the Turks their first toehold in Europe-and without shedding a drop of blood. It was too tempting to refuse, and the sultan accepted. Six thousand of his best forces were dispatched to John Cantacuzene and, together with the Byzantine forces, they took the coastal cities of the Black Sea, ravaged Thrace, and seriously threatened Adrianople. In short order they were besieging Constantinople, to which the young emperor had fled.

Safe behind the walls of St. Barbara’s Convent, little Theadora knew nothing of her impending marriage to a man fifty years her senior. But her mother knew, and Zoe wept that her exquisite child should be sacrificed. Such was the lot, however, of royal princesses, whose only value was in a marriage trade. Zoe actually believed that the sultan had helped John simply because he desired Theadora. Zoe was a devout woman-and the church kept alive the stories of the infidel’s evil ways. It did not occur to the anxious mother that Tzympe was what the sultan was really after.

It was Helena who maliciously broke the news to her younger sister. Four years older than Theadora, she was as beautiful as an angel with her golden hair and lovely blue eyes. But she was not an angel. She was selfish, vain, and cruel. The gentle Zoe had no influence over Helena.

One day when Mother Thamar had left the girls to practice a new embroidery stitch, Helena whispered, “They have chosen you a husband, sister.” Then, without waiting for Theadora to ask who, Helena continued, “You are to be the old infidel’s third wife. You will spend the rest of your days locked up in a harem…while I rule in Byzantium!”

“You lie!” accused Theadora.

Helena giggled. “No, I don’t. Ask Mother. She weeps often enough about it these days. Father needed soldiers he could depend on, and he offered you in exchange for troops. I understand the Turks love little children in their beds. Even boys! They…” And Helena lowered her voice while she described a particularly nasty perversion.

Theadora paled and slowly crumpled to the floor in a faint. Helena regarded her curiously for minute, then she called for help. When questioned by her mother she blandly disclaimed any understanding of why her sister had fainted-a lie that was quickly exposed as Theadora returned to consciousness.

Zoe rarely chastised her children physically, but this time she angrily slapped Helena’s smug face several times. “Take her away,” she told the servants. “Take her from me before I beat her to death!” Then Zoe gathered her youngest daughter into her soft arms. “There, my little one. There, love. It is not so bad.”

Theadora sobbed. “Helena said the sultan likes little girls in his bed. She said he would hurt me! That when a man loves a woman it hurts her, and with little girls it is worse! I am not yet a woman, Mother! I will surely die!”

“Your sister is deliberately cruel, and she is also badly informed, Theadora. Yes, you are to marry the sultan. Your father needed the aid Orkhan could give him, and you were not yet betrothed. It is the privileged duty of a princess to serve her family by an advantageous marriage. What other good is a woman?

“However, you will not live in the sultan’s house until you have begun your womanly show of blood. Your father has arranged it that way. If you are lucky Orkhan will die before then, and you will come home to make a good Christian marriage. In the meantime, you will reside in your own house, safe within the walls of St. Catherine’s Convent in Bursa. Your presence there will guarantee your father Ottoman aid.”

The child sniffed and nestled close to her mother. “I do not want to go. Please don’t make me, Mama. I would sooner take the veil and remain here at St. Barbara’s.”

“My child!” Startled, Theadora looked up into her mother’s shocked face. “Have you heard nothing I have said?” exclaimed Zoe. “You are Theadora Cantacuzene, a princess of Byzantium. You have a duty. That duty is to aid your family as best you can, and you must never forget that, my daughter. It is not always pleasant to do one’s duty, but our duty separates us from the rabble. They exist merely to satisfy their base desires. You must never shirk your duty, my dearest daughter.”

“When must I go?” whispered the child.

“Your father now besieges the city. When it is taken, we will see.”

But Constantinople was not easily taken, not even by one of its own. On the land side, the walls-twenty-five feet thick-rose in three levels behind a moat sixty feet wide and twenty-two feet deep. Normally dry, the moat was flooded during siege by a series of pipes. The first wall was a low one used to shield a line of archers. The next wall rose twenty-seven feet above the second level and sheltered more troops. Beyond lay the third, and strongest, bulwark. The towers-some seventy feet high-held archers, Greek fire machines, and missile throwers.

On the sea side, Constantinople was protected by a single wall with towers set at regular intervals which also enclosed each of its seven harbors. Across the Golden Horn was stretched a thick chain, which prevented unwelcome ships from sailing up the horn.

And across the horn the two sub-cities of Galata and Pera were also well-walled.

The city was besieged for a year. And for a year its gates remained closed to John Cantacuzene. But the presence of his army on the landward side of the town and the sultan’s fleet sitting off the harbors were beginning to take a toll. Food and other supplies began to dwindle. Cantacuzene’s forces found the source of one of the city’s main aqueducts and diverted it so that Constantinople’s water supply was cut.

Then the plague broke out. The infant daughter who Zoe Cantacuzene had borne in sanctuary died. Frantic that he might lose Theadora and, thus, lose the sultan’s aid, John Cantacuzene arranged an escape from the city for his wife and two youngest daughters.

At the Convent of St. Barbara only two people knew of the departure-the Reverend Mother Thamar and the little nun who kept the gate. The night chosen was during the dark of the moon and, by a fortunate coincidence, there was a storm.

Dressed in the habit of the order that had sheltered them, Zoe and her daughters slipped out into the night and walked to the Fifth Military Gate. Zoe’s heart was hammering wildly and her hand, holding the lantern that lit their way, shook uncontrollably. All her life she had been surrounded by slaves. She had never walked through the city at all, much less gone out unescorted. It was the greatest adventure of her life and, though frightened, she walked with determination, breathing deeply, mastering her fear.