According to the legendarium recorded in the 12th-century Gesta Treverorum, the city was founded by an eponymous otherwise unrecorded Trebeta, an Assyrian prince, placing the city's founding legend centuries before and independently of ancient Rome: a medieval inscription on the facade of the Red House in Trier market,
ANTE ROMAM TREVIRIS STETIT ANNIS MILLE TRECENTIS.
PERSTET ET �TERNA PACE FRVATVR. AMEN.
"Thirteen hundred years before Rome, Trier stood / may it stand on and enjoy eternal peace, amen," reflects the proud city tradition. Further embroidery in the monkish Gesta made of Trebeta the son of Ninus, a "King of Assyria" imagined by the ancient Greeks, by a wife prior to his marriage to the equally non-historical Queen Semiramis. His stepmother, Semiramis, despised him and when she took over the kingdom after the death of his father, Ninus, Trebeta left Assyria and went to Europe. After wandering for a time, he led a group of colonizers to the site of Trier Upon his death, his body was cremated on Petrisberg by the people of Trier. The image of "Trebeta" became an icon of the city during the Middle Ages.
In historical time, the Roman Empire subdued the Treveri in the 1st century BC and established Augusta Treverorum (Lit: August (Regal, noble) [City] of the Treveri) in 30 BC. The name is likely to be taken from the title Augustus held by the Princeps or head of state at the time, Augustus Caesar. The city later became the capital of the Roman province of Gallia Belgica, as well as the Roman prefecture of Gaul. It covered 282 ha within its walls and may have had as many as 70,000 inhabitants. The Porta Nigra is counted among the Roman architecture of the city. A residence of the Western Roman Emperor, Roman Trier was the birthplace of Saint Ambrose. Sometime between 395 and 418 the Roman administration moved the staff of Pretorian Prefecture from the city to Arles. The city continued to be inhabited, but was not as prosperous as
