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He invested a fortune on the house and grounds , commissioning the stairway murals and ceiling paintings by the celebrated French artist Louis Laguerre , whose work can also be seen at Blenheim Palace and Hampton Court .
 Louis Laguerre
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 Laguerre