She was the daughter of Gavinius, a Christian priest in Rome, and the niece of Pope Gaius. The Emperor Diocletian's adopted son Maximian wished to marry Susanna, but she had no desire to marry any one, least of all a pagan. The patricians Claudia and Maxima were sent to Susanna by the Emperor to present Maximian's suit; but instead she turned both of them, and all their households, to the Faith. The enraged Emperor had Claudia, Maxima and their families executed, then had Susanna herself beheaded. The Emperor's wife, Serena, was a secret Christian, and took Susanna's body secretly and buried it. Soon after this Susanna's father Gavinius and her uncle Pope Gaius also met martyrdom.