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Her paternal grandfather , John Howard , 1st Duke of Norfolk , had been created Duke of Norfolk in 1483 following the death of John de Mowbray , 4th Duke of Norfolk , with no legitimate male heirs .
 person: John Howard , 1st Duke of Norfolk; person: Duke of Norfolk; person: John de Mowbray , 4th Duke of Norfolk
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 Howard , 1st Duke of Norfolk; person: Duke of Norfolk; person: John de Mowbray , 4th Duke of Norfolk