Tullia was the last queen of Rome. She was the younger daughter of Rome's sixth king, Servius Tullius, and she married Lucius Tarquinius. Along with her husband, she arranged the murder and overthrow of her father, securing the throne for her husband. She is a semi-legendary figure in Roman history.
Tullia was the younger of the two daughters of Rome's sixth king, Servius Tullius. By Roman custom, both daughters were named Tullia, the feminine form of their father's nomen.
Servius Tullius arranged the marriage of his daughters to the two sons of his predecessor, Lucius Tarquinius Priscus. The sons were named Lucius Tarquinius and Aruns Tarquinius. According to Livy, the younger of the two daughters had the fiercer disposition, yet she was married to Aruns, who had the milder disposition of the two sons. Livy says that the similar temperaments of the younger Tullia and Lucius Tarquinius drew them to each other, and Tullia inspired Tarquinius to greater daring. Together they arranged the murder of their respective siblings, in quick succession, and Tarquinius and Tullia were afterwards married.
Tullia then encouraged her new husband to seek the throne. Tarquinius was convinced, and began to solicit the support of the patrician senators, especially those families who had been given senatorial rank by his father. He bestowed presents on them and vilified Servius Tullius in their company.
Having acquired the backing of a large number of senators, Tarquinius went to the senate house with an armed guard and seated himself on the throne. When Servius Tullius protested, Tarquinius hurled him bodily into the street, where he was murdered by Tarquinius' assassins, apparently at Tullia's suggestion. Tullia then drove in her carriage to the senate house, where she hailed her husband as king. He ordered her to return home, away from the tumult. She drove along the Cyprian Street and turned towards the Orbian Hill, in the direction of the Esquiline Hill. There at the top of the Cyprian Street she encountered her father's mutilated remains and, in a frenzy of madness, drove the carriage over his body. Ever afterwards this street was called the "Vicus Sceleratus" (street of infamy, or of wickedness) in memory of her actions. Tullia's act of desecration spattered her with blood that stained her clothes, and in this manner she returned to her husband's house. Livy states that Tarquinius' household gods were angered by this crime, and determined that a reign begun so badly would also end badly.
When the uprising led by Lucius Junius Brutus ended the Roman monarchy and King Tarquinius and his family were exiled from Rome, Tullia in particular was cursed by the Roman people as she fled her home, given her role in the murder of her own father.