The name Albano is still a source of debate. In Roman times, the territory of Latium was called Albanum: Albanum (Pompeians Domitiani, etc.).The estate of the wealthy Romans on the Colli Albani (Ager Albanus) and Castra Albana was the name of the camp built by Septimius Severus, within the confines of the fund Albanum previously owned by Domitian, to accommodate the Legio II Parthica. This place-name hypothesis is considered the most reliable as the root of these ties in Indo-European * alb / * alp indicating a high location, the Mons Albanus (now Monte Cavo) in this case, while it was the centre of worship and common pasture (compascuo). Other assumptions, however, considered valid are the Latin place-name adjective albus (white) or Greek αλαβα (ash). Etymologically proposed Albanum / Castra Albana is the same as being proposed for Alba Longa, whose location is not known with certainty, but placed in a medieval tradition of urban core areas of modern Albano Laziale . The second part of the Latium name of was used in 1873 to distinguish the city from Albano Sant'Alessandro (Bergamo), Albano Vercellese (Vercelli province) and Albano di Lucania (Potenza province).