April 21, 753 B.C.: ROME FOUNDED. According to tradition, on April 21, 753 B.C., Romulus and his twin brother, Remus, founded Rome on the site where they were suckled by a she-wolf as orphaned infants. Actually, the Romulus and Remus myth originated sometime in the fourth century B.C., and the exact date of Rome's founding was set by the Roman scholar Marcus Terentius Varro in the first century B.C. According to the legend, Romulus and Remus were the sons of Rhea Silvia, the daughter of King Numitor of Alba Longa. Before the birth of the twins, Numitor was deposed by his younger brother Amulius, who forced Rhea to become a vestal virgin so that she would not give birth to rival claimants to his title. However, Rhea was impregnated by the war god Mars and gave birth to Romulus and Remus.
Amulius ordered the infants drowned in the Tiber, but they survived and washed ashore at the foot of the Palatine hill, where they were suckled by a she-wolf until they were found by the shepherd Faustulus. Reared by Faustulus and his wife, the twins later became leaders of a band of young shepherd warriors. After learning their true identity, they attacked Alba Longa, killed the wicked Amulius, and restored their grandfather to the throne. The twins then decided to found a town on the site where they had been saved as infants. They soon became involved in a petty quarrel, however, and Remus was slain by his brother. Romulus then became ruler of the settlement, which was named "Rome" after him. After Romulus, there were six more kings of Rome, the last three believed to be Etruscans. Around 509 B.C., the Roman republic was established.