Le Mans

Le Mans (a city, the prefecture of Sarthe department, Pays de la Loire, France)

“Je vais aller au Mans” — I'm going to go to Le Mans

From Old French Celmans, from Vulgar Latin *Cenomanus, from Latin Cenomanorum, ultimately named after the Celtic tribe Cenomani. The first syllable was later reanalyzed as cel (“this”) and replaced with le (“the”).