Chatham is a town located in the southeast corner of Massachusetts. It is part of Barnstable County and is known for its beautiful beaches, fishing, and boating. The Pitt solution to the crossword refers to William Pitt, 1st Earl of Chatham, who was a British statesman in the 18th century. He served as Prime Minister of Great Britain from 1766 to 1768 and is remembered for his successful diplomatic efforts during the Seven Years' War.