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His wife was Helena , a member of the Sturdza family and daughter of Ioan Sturdza , who had been Prince of Moldavia from 1822 to 1828 .
 Sturdza, Ioan Sturdza
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Sturdza, Ioan Sturdza