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During the Bourbon Restoration , he was attached to the service of King Louis XVIII of France 's nephew , Louis-Antoine , Duc d'Angoulême , and during the Hundred Days tried to rouse the Dauphiné region in favor of the royal cause .
 Louis XVIII of France, Louis-Antoine , Duc d'Angoulême
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Louis XVIII of France, Louis-Antoine , Duc d'Angoulême