ALBA Longa, in Ancient Geography, a colony from Latium, in Latium, 15 miles south-east from Rome, established by Ascanius, the son of Aeneas, at the foot of the Mons Albanus. It was called Alba, from a white sow found by Aeneas, which farrowed 30 white pigs on that spot; which circumstance was interpreted to portend the building of a city there in 30 years after (Propertius). The epithet Longa was added on account of its length. It was the royal residence till the building of Rome, as was foretold by Anchises (Virgil); was destroyed by Tullus Hostilius, all but the fame or temple; and the inhabitants were transplanted to Rome (Strabo).