1557
However , the Judicial Circuits Act of 1866 eliminated the seat then vacant after the death of John Catron , and provided that two more would be eliminated as they became vacant .
 person: John Catron
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: John Catron