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The oldest part of the current building was once part of a four-storey fortified tower , built in 1573 by Bess of Hardwick and her third husband , George Talbot , 6th Earl of Shrewsbury .
 Bess of Hardwick, George Talbot , 6th Earl of Shrewsbury
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bess of Hardwick, George Talbot , 6th Earl of Shrewsbury