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Founding of the chapel It was originally thought that St Margaret herself worshipped in this small chapel , but the style of the architecture indicates that it was built during the reign of King David I , her fourth son , who ruled from 1124 – 1153 .
 Margaret, King David I
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Margaret, King David I