Peñalba de Villastar in the context of Villastar

Hispano-Celtic is a term for all forms of Celtic spoken in the Iberian Peninsula before the arrival of the Romans (c. 218 BC, during the Second Punic War). In particular, it includes:

• A northeastern inland language attested at a relatively late date in the extensive corpus of Celtiberian. This variety, which Jordán Cólera proposed to name Northeastern Hispano-Celtic, has long been synonymous with the term Hispano-Celtic and is universally accepted as Celtic.
• A language in the northwest corner of the peninsula, with a northern and western boundary marked by the Atlantic Ocean, a southern boundary along the river Douro, and an eastern boundary marked by Oviedo, which Jordán Cólera has proposed to call Northwestern Hispano-Celtic, where there is a corpus of Latin inscriptions containing isolated words and sentences that are clearly Celtic.

Lugus (sometimes Lugos or Lug) is a Celtic god whose worship is attested in the epigraphic record. No depictions of the god are known. Lugus perhaps also appears in Roman sources and medieval Insular mythology.

Various dedications, concentrated in Iberia and dated to between the 1st century BCE and the 3rd century CE, attest to the worship of the god Lugus. However, these predominately describe the god in the plural, as the Lugoves. The nature of these deities, and their relationship to Lugus, has been much debated. Only one, early inscription from Peñalba de Villastar, Spain is widely agreed to attest to Lugus as a singular entity. The god Lugus has also been cited in the etymologies of several Celtic personal and place-names incorporating the element "Lug(u)-" (for example, that of the prominent Roman settlement Lugdunum).