Spurius Tarpeius is a mythological character. He was the commander of the Roman

Roman Kingdom

The Roman Kingdom was the period of the ancient Roman civilization characterized by a monarchical form of government of the city of Rome and its territories....

 citadel under King Romulus

Romulus

- People:* Romulus and Remus, the mythical founders of Rome* Romulus Augustulus, the last Western Roman Emperor* Valerius Romulus , deified son of the Roman emperor Maxentius* Romulus , son of the Western Roman emperor Anthemius...

. His daughter Tarpeia

Tarpeia

In Roman mythology, Tarpeia was a Roman maiden who betrayed the city of Rome to the Sabines in exchange for what she thought would be a reward of jewellery...

 betrayed the city to the fathers of the kidnapped Sabine

Sabine

The Sabines were an Italic tribe that lived in the central Appennines of ancient Italy, also inhabiting Latium north of the Anio before the founding of Rome...

women and asked for everything the sabine warriors had on their left arms (it is thought Sabine warriors had gold bracelets and rings on their left arms). However they crushed her with the shields they had on their left arms instead.