
1) Historical Celtic people 2) Tribe of pre-Roman Gaul
Found on
https://www.crosswordclues.com/clue/mediomatrici

The Mediomatrici (Greek: Μεδιομάτρικες) were an ancient Celtic people of Gaul, who belong to the division of Belgae. Julius Caesar shows their position in a general way when he says that the Rhine flows along the territories of the Sequani, Mediomatrici, Triboci or Tribocci, and Treviri. Ptolemy places the Mediomatrici south of the Tr...
Found on
http://en.wikipedia.org/wiki/Mediomatrici

(from the article `Luxembourg`) The earliest human remains found in present-day Luxembourg date from about 5140 , but little is known about the people who first populated the area. ...
Found on
http://www.britannica.com/eb/a-z/m/63
No exact match found.