Origins of the Roman People
Following the war with the Rutulians, Aeneas negotiated terms with the Latins who agreed to follow the Trojans' rule and worship their gods. In return, the Trojans agreed to call themselves Latins and learn the Latin language.
Aeneas fulfilled the oracle's prophecy and married Lavinia. They had a son named Silvius, the first child born of the Roman race. However, Silvius did not succeed his father as ruler of Latium. Aeneas had a son from his first marriage named Ascanius, whose name later changed to Iulus.
Iulus wandered inland and founded a city called Alba Longa, which would become the capital of the Latins and remain so for many years. Each new ruler of Latium took his place on the throne in Alba Longa. Throughout the first twelve generations of rulers (all descendants of Aeneas), the Latins enjoyed peace and prosperity.
It was this combination of Trojans and Latins that would begin the new Roman race. However, they weren't called Romans yet — because there wasn't yet a city named Rome.