Theveste was a Roman colony founded in 75 AD on a place of previous town Tbessa. During the 1st century the Legio III Augusta resided in there.
See:
- "THEVESTE in "Enciclopedia dell' Arte Antica", https://www.treccani.it/enciclopedia/theveste_(Enciclopedia-dell'-Arte-Antica)/
- https://en.wikipedia.org/wiki/Theveste