The Orobii, also Orumobii or Orumbovii, are a population that inhabits the northern Italian valleys of Bergamo, Como and Lecco in the 1st millennium BCE.Pliny the Elder ascribes to them the foundation of the cities of Como, Bergamo, Licini Forum and Parra.Classical historians such as Pliny the Elder himself thought them as of Greek origin.The modern interpretation by archaeologists and linguists is different: they see the Orobii as a population of Celticized Ligurians, or Celtic-Ligurians, formed with the contribution of Celtic immigrants from the Rhine and the Danube areas, in an early historical period preceding the Gallic invasions of the 4th century BCE, who settled in northwest Italy between the Oglio and the Ticino rivers.