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Petronilla de Grandmesnil , Countess of Leicester ( c. 1145 — 1212 ) was the daughter of one of three Grandmesnil brothers , William , and wife of Robert de Beaumont III , earl of Leicester , known as “ Blanchmains ” ( d. 1190 ) .
 person: Petronilla; person: Leicester; person: Robert de Beaumont III , earl of Leicester
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: Petronilla; person: Leicester; person: Robert de Beaumont III , earl of Leicester