Chatham Township, New Jersey incorporated as an independent borough and its former village boundaries were expanded between 1891 - 1899 with annexed portions of rural lands that had formerly been within the township. The settlement of Chatham had been established in 1710 as "John Day's Bridge" and, in 1773 when New Jersey was an English province, adopted the name of "Chatham" to honor William Pitt, 1st Earl of Chatham, a British supporter of the colonial cause. This village also had been within Morris Township and it was an active community in the Revolutionary War. On August 19, 1892, Chatham seceded from the new township
John Pitt, 2nd Earl of Chatham recalled in disgrace. His appearance before a parliamentary enquiry did him no favours, particularly when it emerged that he had presented the King with a private memorandum which ought to have gone to the Secretary of State for War first. Spencer Perceval's government withdrew its support from Chatham and he was forced to resign from the Ordnance in May 1810. Chatham's political and military reputation was ruined. A poem circulated making fun of his inactivity and the lack of co-operation between the army and navy: Chatham did not serve actively again, but was promoted to full General in January 1812.