31507
Baron Erskine , of Restormel Castle in the County of Cornwall , is a title in the Peerage of the United Kingdom , since 1960 a subsidiary title of the earldom of Buchan .
 Erskine, Cornwall, Buchan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Erskine, Cornwall, Buchan