Brownsburg-Chatham, Quebec Brownsburg-Chatham, Quebec Brownsburg-Chatham is a municipality in the Laurentides region of Quebec, Canada, part of the Argenteuil Regional County Municipality. It is located along the Ottawa River, just west of Lachute, and includes the communities of Brownsburg, Cushing, Dalesville, Greece's Point, Pine Hill, and Saint-Philippe. Economic activities include agriculture, tourism and the manufacture of explosives. It is the hometown of Gilles Lupien, retired defenceman of the Montreal Canadiens. Chatham Township was established in 1799, and named after English Statesman William Pitt, 1st Earl of Chatham (1708–1778). Mostly populated by rich American Loyalists, its post office opened in 1829 and the
Chatham Township, New Jersey that had taken its name and adopted the village form of government established in the United States for the new state of New Jersey. Shortly thereafter, Chatham adopted the borough form of government on March 1, 1897. Florham Park was formed from portions of the township on March 20, 1899. Most of Green Village has always been within the township's jurisdiction. In 1773, the village "John Day's Bridge", a community governed by the English township of Morris since its settlement in 1710, was renamed as, "Chatham", in honor of Sir William Pitt, a British prime minister and the first Earl