Rhea Silvia and also known as Ilia, was the mythical mother of the twins Romulus

Romulus and Remus

Romulus and Remus are Rome's twin founders in its traditional foundation myth, although the former is sometimes said to be the sole founder...

 and Remus

Remus

Remus is the twin brother of the mythical founder of Rome.Remus may also refer to:* Remus , a fictional planet in Star Trek* Remus , a moon of the asteroid 87 Sylvia...

, who founded the city of Rome

Rome

Rome is the capital of Italy and the country's largest and most populated city and comune, with over 2.7 million residents in . The city is located in the central-western portion of the Italian Peninsula, on the Tiber River within the Lazio region of Italy.Rome's history spans two and a half...

. Her story is told in the first book of Ab Urbe Condita

Ab Urbe condita (book)

Ab urbe condita libri — often shortened to Ab urbe condita — is a monumental history of ancient Rome written in Latin sometime between 27 and 25 BC by the historian Titus Livius. The work covers the time from the stories of Aeneas, the earliest legendary period from before the city's founding in c....

of Livy

Livy

Titus Livius — known as Livy in English — was a Roman historian who wrote a monumental history of Rome and the Roman people. Ab Urbe Condita Libri, "Chapters from the Foundation of the City," covering the period from the earliest legends of Rome well before the traditional foundation in 753 BC...

 and in fragments from Ennius

Ennius

Quintus Ennius was a writer during the period of the Roman Republic, and is often considered the father of Roman poetry. He was of Calabrian descent...

, Annales and Fabius Pictor.
According to Livy's account of the legend she was the daughter of Numitor

Numitor

In Roman mythology, King Numitor of Alba Longa, son of Procas, descendant of Aeneas the Trojan, was the father of Rhea Silvia. He was overthrown by his brother, Amulius, and thrown out of his kingdom where he had ruled. Amulius also murdered his sons, in an effort to remove power from his brother...

, king of Alba Longa

Alba Longa

Alba Longa – in Italian sources occasionally written Albalonga – was an ancient city of Latium in central Italy southeast of Rome in the Alban Hills. Founder and head of the Latin League, it was destroyed by Rome around the middle of the 7th century BC. In legend, Romulus and Remus, founders of...

, and descended from Aeneas

Aeneas

Aeneas , in Greco-Roman mythology, was a Trojan hero, the son of the prince Anchises and the goddess Aphrodite. His father was the second cousin of King Priam of Troy, making Aeneas Priam's second cousin, once removed. The journey of Aeneas from Troy , which led to the founding a hamlet south of...

. Numitor's younger brother Amulius

Amulius

In Roman mythology, Amulius was the brother of Numitor and son of Procas. He was the hostile uncle of Romulus and Remus' mother.-Myth:His brother, Numitor, was the King of Alba Longa. Amulius overthrew him and took the throne. Amulius forced Rhea Silvia, Numitor's daughter, to become a Vestal...

 seized the throne and killed Numitor's son, then forced Rhea Silvia to become a Vestal Virgin

Vestal Virgin

In ancient Roman religion, the Vestals or Vestal Virgins , were priestesses of Vesta, goddess of the hearth. The College of the Vestals and its well-being was regarded as fundamental to the continuance and security of Rome, as embodied by their cultivation of the sacred fire that could not be...

, a priestess of the goddess Vesta

Vesta (mythology)

Vesta was the virgin goddess of the hearth, home, and family in Roman religion. Vesta's presence was symbolized by the sacred fire that burned at her hearth and temples...

.