Tribe, neighbouring the Rauraci and the Latobrigi, induced by the Helvetii to take part in their campaign (Caes. B Gall. 1,5,4; 1,25,6: T. are the rearguard of the Helvetian army; 1,28,3: after the battle of Bibracte in 58 BC they were sent by Caesar back to their homeland; 1,29,2: number of marchers 36,000). The role of the T. in the battle of Bibracte implies an experienced mercenary corps (as indeed in [1. 788]). On the homeland of the T. and their ethnic origin (Celtic or Germanic) Caesar says nothing.
Bibliography
1 P. Goessler, s. v. T., RE…