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Rancho La Purísima Concepción was a Mexican land grant in present day Santa Clara County , California given in 1840 by Governor Juan Alvarado to José Gorgonio and his son José Ramon , Ohlone Indians .
 Santa Clara County , California, Juan Alvarado
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:
 Santa Clara County , California, Juan Alvarado