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Ronald Oliver Bowlby ( born 16 August 1926 ) was the ninth Bishop of Newcastle from 1973 until 1980 , who was then translated to Southwark where he served until his retirement eleven years later in 1991 .
 Bowlby
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bowlby