Empress Theodora (reigned 527 – 548 CE)
Theodora had a strange rise to power and religious authority. She was an actress, a mistress to wealthy men, and (common for actresses of the time) a prostitute. After converting to an early branch of Christianity, she captured the heart of Justinian, a man on the rise in the Eastern Roman politics. When Justinian became Emperor, Theodora, now Empress, focused her efforts on behalf of women in her realm. She promoted laws that protected girls from sex slavery, established houses for former prostitutes, banished brothel keepers from major cities, and established anti-rape laws. For all her efforts on behalf of powerless women, she kept a sharp eye on the upper-class ladies threatening her position; rumors have her involved in the deaths and torture of those who threatened her power.