In May 1762, Grenville was appointed Northern Secretary, where he took an increasingly hard line in the negotiations with France and Spain designed to bring the Seven Years' War to a close.Sources: *History of the United States from the Discovery of the American Continent Volume V. Bancroft, George. Little, Brown and Company. Boston, Mass. 1854*American Leviathan: Empire, Nation and the Revolutionary Frontier. Griffin, Patrick. Hill and Wang A division of Farrar, Straus and Giroux. New York, NY. 2007* Wilkes, Liberty, and Number 45: The Colonial Williamsburg Official History Site. http://www.history.org/Foundation/journal/summer03/wilkes.cfm</ref>