Answer
Etruscan mercenary, according to Roman Emperor Claudius, who believed Servius' great-grandfather, Caelius Vivenna, led a group of Etruscan mercenaries who helped to overthrow Rome's last king, the tyrant Tarquin the Proud. However, this claim needs to be treated cautiously due to its dubious nature and its potential bias as Claudius used an Etruscan origin as a source of political power