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Origins and education Berkeley was the eldest son and heir of Augustus Berkeley , 4th Earl of Berkeley by Elizabeth , daughter of Henry Drax , of Ellerton Abbey , Yorkshire .
 Berkeley, Augustus Berkeley , 4th Earl of Berkeley
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
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Answer:
 Berkeley, Augustus Berkeley , 4th Earl of Berkeley