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Foundation and history of the priory It was founded around 1072 as a Benedictine priory by William fitzOsbern and his son Roger de Breteuil , 2nd Earl of Hereford .
 Benedictine, William fitzOsbern, Roger de Breteuil , 2nd Earl of Hereford
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:
 Benedictine, William fitzOsbern, Roger de Breteuil , 2nd Earl of Hereford