 According to an Etruscan tradition, the hero Macstarna, usually equated with Servius Tullius, defeated and killed a Roman named Gnaeus Tarquinius, and rescued the brothers Caelius and Aulus Vibenna from captivity.This may recollect an otherwise forgotten attempt by the sons of Tarquin the Elder to reclaim the throne.To forestall further dynastic strife, Servius married his daughters, known to history as Tullia Major and Tullia Minor, to Lucius Tarquinius Superbus, the future king, and his brother Arruns.