How did tullus hostilius become king

King of Rome from 672 to 640 BC

Tullus Hostilius (Classical Latin:[ˈtʊlːʊs(h)ɔsˈtiːliʊs]; r. 672–640 BC) was the legendary third king of Rome. He succeeded Numa Pompilius and was succeeded by Ancus Marcius. Unlike his predecessor, Tullus was known as a warlike king who, according to the Roman historian Livy, believed the more peaceful nature of his predecessor had weakened Rome. It has been attested that he sought out war and was even more warlike than the first king of Rome, Romulus.^[1] Accounts of the death of Tullus Hostilius vary. In the mythological version of events Livy describes, he had angered Jupiter who then killed him with a bolt of lightning.^[2] Non-mythological sources on the other hand describe that he died of plague^[3] after a rule of 32 years.^[4]

Tullus Hostilius was the grandson of Hostus Hostilius, who had fought with Romulus and died during the Sabineinvasion of Rome.^[5] According Biography definition and examples.