Grenville is a village municipality in the Argenteuil Regional County Municipality of the Laurentides region of Quebec, Canada. It is located opposite Hawkesbury, Ontario, on the Ottawa River. Although Grenville was already shown on the Gale and Duberger Map of 1795, it was not until January 28, 1808, that Grenville Township was officially established; …Grenville is a village municipality in the Argenteuil Regional County Municipality of the Laurentides region of Quebec, Canada. It is located opposite Hawkesbury, Ontario, on the Ottawa River. Although Grenville was already shown on the Gale and Duberger Map of 1795, it was not until January 28, 1808, that Grenville Township was officially established; the township's name commemorated Lord George Grenville. Two years later, in 1810, the first French and English settlers arrived in the area.