Many of the empresses were humbly born too. Besides Theodora, the circus girl, there was one who had been a cook, and a third who was the daughter of a saloonkeeper. Even Saint Theodora was brought up in poverty because her father, who had once been a courtier, had given all his money to the poor.

Saint Theodora became empress when the emperor picked his bride by following an old custom of the Byzantine emperors. Wishing to marry, he sent messengers throughout his realm, telling them to bring back the most beautiful young women they could find. Seventeen were paraded before him, and when the one he was about to choose annoyed him by a flippant answer she made, he chose Theodora.

Theodora did not intend to stay poor like her father. One day, her husband, the emperor, looked out of the window and saw a rich, heavily laden merchant vessel sail in and tie up to a wharf.

“I wonder who owns it,” he mused.

“It is mine,” said the empress.

The emperor flew into a fury. His wife should not be engaged in trade like some huckster. He made her sell it, but he did let her keep the profits.

Because these rulers were the emperors chosen by God, the Byzantines bowed their knee to them as the ancient Egyptians had to the Pharaohs. But because they were from the people, and also because the Byzantines had sharp tongues and liked to be sarcastic, the people sometimes gave their rulers a rough time.

There were more than 100 emperors in the long period of the Byzantine Empire, and many of them were given nicknames. Some of these nicknames were far from flattering.

Here are just a few: Justinian Nose-Cut-Off. (This was Justinian II, not the great Justinian.) Constantine the Stable Boy. Michael the Stutterer. Michael the Drunkard. Constantine Born-in-the-Purple. Basil the Bulgar Slayer. Michael Thinks-He’s-a-Soldier. Even one empress had a nickname; Leo the Philosopher’s fourth wife was called Zoe Black Eyes.