Carmen Sierra

(female) (Spanish) form of Carmel, altered by folk etymology to the form of the Latin word carmen ‘song’. It is now sometimes found as a given name in the English-speaking world, in spite of, or perhaps because of, its association with the tragic romantic heroine of Bizet's opera Carmen (1875), based on a short story by Prosper Mérimée.

Spanish and Jewish (Sephardic): habitational name from any of the numerous places named Sierra or La Sierra, from sierra ‘ridge or chain of hills’ (from Latin serra ‘saw’).