Lucius Tarquinius Superbus ('Tarquin the Proud') was traditionally the seventh and last king of ancient Rome before it became a republic. He belonged to the Etruscan Tarquinii clan, reigned from 534 to 510 BCE, and was infamous for his tyrannical rule, although Rome did enlarge its territory in that time. Following his exile after the infamous rape of Lucretia by his son Sextus, he joined forces with the Etruscan king Lars Porsenna who besieged Rome c. 508 BCE. Porsenna did not restore Tarquinius to the throne, though, and the ex-king fled to Cumae where he died in 495 BCE.
This is a companion discussion topic for the original content at https://www.worldhistory.org/Lucius_Tarquinius_Superbus/.