The name 'Ilercavonia' to refer to the territory occupied by the Ilercavones Iberian tribe appears in ancient Greek and Roman texts and documents. The northern limits of this territory were in Serra de la Llena, the northeastern in Coll de Balaguer, the western in Mequinensa and the southern in the area of a river mentioned as 'Oduba' in Roman documents, which could be either the Millars River, or another river further south along the coast closer to Sagunt. This geographical zone corresponds roughly to the present-day Maestrat/Maestrazgo, Matarraña/Matarranya and Terres de l'Ebre comarcas.