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In 795 his father , Bran , had been assassinated by his successor Fínsnechta Cethardec mac Cellaig ( died 808 ) of the Uí Dúnchada sept as a direct challenge to the high-king .
 Bran, Fínsnechta Cethardec mac
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bran, Fínsnechta Cethardec mac