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The Honourable Katherine Plunket ( 22 November 1820 – 14 October 1932 ) was an Irish aristocrat from County Louth , a prolific botanical illustrator and the oldest person in Irish history .
 person: Katherine Plunket; location: County Louth
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Katherine Plunket; location: County Louth