Lusitanian

Lusitanian (so named after the Lusitani or Lusitanians) is an extinct Indo-European Paleohispanic language. There has been support for either a connection with the ancient Italic languages or Celtic languages. It is known from only six sizeable inscriptions, dated to roughly the first century AD, and numerous names of places (toponyms) and of gods (theonyms). The language was spoken in the territory inhabited by Lusitanian tribes, between the Douro and Tagus rivers, territory that today falls in central Portugal and western Spain.

From Wikipedia · Lusitanian language · CC BY-SA 4.0