Lucius Tarquinius Priscus, or Tarquin the Elder, was the legendary fifth king of Rome and first of its Etruscan dynasty. He reigned for thirty-eight years. Tarquinius expanded Roman power through military conquest and grand architectural constructions. His wife was the prophetess Tanaquil.

The king of Rome was the ruler of the Roman Kingdom. According to legend, the first king of Rome was Romulus, who founded the city in 753 BC upon the Palatine Hill. Seven legendary kings are said to have ruled Rome until 509 BC, when the last king was overthrown. These kings ruled for an average of 35 years.