Who is Sextus from The Early History of Rome: Books I-V and what is their importance?

Sextus was the son of either Tarquin and Tullia or of Tarquin and Tullia's sister. Either way, he was a Prince of Rome. King Servius was Sextus' grandfather. As Sextus grew up, his father came up with a plan to make the best of him, and to send him far enough away to prevent trouble at home. Thus, Tarquin sent his son to Gabii, to take over. He advised Sextus to appear as if he were his enemy, a tactic that was successful, as Sextus grew to become a popular leader of Gabii. Even so, he did execute some of his political rivals as his father had done in Rome.