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His sister was Faltonia Betitia Proba a Roman Christian poet , the most important and influential poet in Latin language of the Late Antiquity , who was married to Clodius Celsinus Adelphius praefectus urbi of Rome in 351 .
 Faltonia Betitia Proba, Roman, Clodius Celsinus Adelphius
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Faltonia Betitia Proba, Roman, Clodius Celsinus Adelphius