The name may derive from Lucis or Lusis, an ancient people mentioned in Avienus's Ora Maritima (4th century) and based on the Massaliote Periplus of the 6th century BC), and Tan, from Celtic Tan (Stan), or Tain, meaning a region or implying a country of waters, a root word that formerly meant a prince or sovereign governor of a region.
About 360 AD Rufus Festus Avienus in Ora Maritima mentions a number of peoples living on the upper Rhône in Valais.
Avienus |