Lusitania
Lusitania (Latin), an ancient Roman province of Hispania (Iberia), encompassed the southwest of the country from the southern coast to the Durius (Douro) River in the north, thus comprising the main part of present-day Portugal as well as parts of León and Spanish Extremadura. It bordered Tarraconenes‘ Hispania to the north and east, and Bætica to the southeast. The province‘s main river was the Tagus (Tajo); the Anas (Guadiana) River formed the border with Bætica. The province was named after the Lusitanians, a valiant Iberian people who lived on both sides of the Tagus and, under the leadership of Viriatus, resisted the Romans for a considerable time. The other main tribes were the Vettones in the northeast and the Celtiberians south of the Tagus. Important cities include: Olisipo (Lisbon), Pax Julia (Beja), Augusta Emerita (Merida), Norba Caesarina (Caceres), Salmantica (Salamanca).
Source: Meyers Großes Konversations-Lexikon, 6. Auflage 1905–1909