Statistics for occurrence #1 of “Chatham” in chapter 3 of George Bancroft, History of the United States from the Discovery of the American Continent, Vol. 6, 10th edition.:

...ractice. The incapacity of Pitt's new Administration was apparent from its first day, when he announced to his astonished and disheartened colleagues his purpose of placing himself as the Earl of Chatham in the House of Lords. During the past year such an elevation in rank had often been suggested as his due, and would have been no more than a moderate distinction for merit far inferior to his own....
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Chatham (United Kingdom) 205 66 3 0 0 user votes
Chatham (Massachusetts, United States) 253 86 3 0 0 user votes
Chatham (Canada) 118 54 8 0 0 user votes
Chatham (Georgia, United States) 32 0 4 0 0 user votes
Chatham (North Carolina, United States) 18 0 4 0 0 user votes
Chatham (Alaska, United States) 4 4 0 0 0 user votes
Chatham (Illinois, United States) 1 0 1 0 0 user votes
Chatham (Canada) 0 0 0 0 0 user votes
Chatham (Florida, United States) 0 0 0 0 0 user votes
Chatham (Florida, United States) 0 0 0 0 0 user votes
Chatham (Illinois, United States) 0 0 0 0 0 user votes
Chatham (Kentucky, United States) 0 0 0 0 0 user votes
Chatham (Louisiana, United States) 0 0 0 0 0 user votes
Chatham (Michigan, United States) 0 0 0 0 0 user votes
Chatham (New Hampshire, United States) 0 0 0 0 0 user votes
Chatham (New Jersey, United States) 0 0 0 0 0 user votes
Chatham (Ohio, United States) 0 0 0 0 0 user votes
Chatham (Pennsylvania, United States) 0 0 0 0 0 user votes
Chatham (Virginia, United States) 0 0 0 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.