
1) Ancient Roman equite
Found on
https://www.crosswordclues.com/clue/terrasidius

Titus Terrasidius was a Roman Knight of the Equestrian order and an officer of the cavalry in Julius Caesar`s Legio VII Claudia. He and other officers of the legion were sent out to negotiate provisions for the winter of 56–55 BC, they were captured by Breton tribes who were then subjugated as Caesar describes in his Commentarii de Bello Gallic....
Found on
http://en.wikipedia.org/wiki/Terrasidius
No exact match found.