Where does “Troyes” come from?

Troyes comes from French Troyes, derived from Latin Tricassium, the name of a Gallic city and people called Tricassae in Latin.

Ancestry of “Troyes”, step by step

Step	Language	Word	Meaning
1	French	Troyes	—
2	Latin	Tricassae	—
3	Latin	Tricassium	—