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Plectrude was allowed to retire to a convent ; Theudoald lived to 741 under his uncle 's protection , a kindness unusual for those times , when mercy to a former gaoler , or a potential rival , was rare .
 Plectrude, Theudoald
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Plectrude, Theudoald