Claim: Les vêpres siciliennes (The Sicilian Vespers - is a grand opera in five acts by the Italian romantic composer Giuseppe Verdi) roles include the Le Sire de Béthune, a French officer, Louis Guéymard and Thibault, a French soldier.
Evidence: Louis Guéymard Guy de Montfort, Governor of Sicily under Charles d'Anjou, King of Naples Le Sire de Béthune, a French officer Le Comte de Vaudemont, a French officer Henri, a young Sicilian Jean Procida, a Sicilian doctor La Duchesse Hélène, sister of Duke Frederick of Austria Ninette, her maid Daniéli, her servant Thibault, a French soldier Robert, a French soldier Mainfroid, a Sicilian, adherent of Procida