Susanna was an early Christian martyr. She suffered martyrdom around the year 295, during the persecution of Diocletian. She was arrested for being a Christian and beheaded in her father's house. This house and the one next to it which belonged to her uncle Caius, a Roman prefect, were turned into a church, which became known as the church of St. Susanna ad duas domos (of the two houses). Little else is known of Susanna; her story is found in the story of St. Sebastian Her feast together with St. Tiburtius, another early martyr, is celebrated August 11.