Jacques-René de Brisay de Denonville, Marquis de Denonville
Replacing Joseph Antoine de LaBarre in 1685, he arrived in New France on 1 August 1685. Denonville set out to make King Louis XIV proud. The Iroquois Confederacy had been a nuisance for half a century, hampering New France's efforts to establish itself as a profitable colony. Although France and England were at peace, in June 1687, Denonville sent Sieur de Troyes north from Montreal with a hundred men (most likely the troupes de la marine), to capture the English fur trading posts on Hudson Bay. The victory was swift and profitable; word of the French attack would not reach the English for months. Denonville then set out with a well-organized force to Fort Frontenac, where they met with the 50 hereditary sachems of the Iroquois Confederacy from their Onondaga council fire. These 50 chiefs constituted the entire decision-making strata of the Iroquois. They had been lulled into meeting under a flag of truce. Denonville seized, chained, and shipped the 50 Iroquois chiefs to Marseilles, France, to be used as galley slaves. He then ravaged the land of the Seneca. Before he returned to New France, he travelled down the shore of Lake Ontario and created Fort Denonville at the site where the Niagara River meets Lake Ontario. This site was previously used by La Salle for a fort named Fort Conti from 1678 to 1679, and was later used for Fort Niagara, which still exists to this day.
In 1687, Denonville launched a campaign which was well-organised against the Senecas. He preceeded by destroying their village and food supplies and inflicting some casualties. However, they refused to stand and fight. After a brief skirmish, they fled. Their material losses were easily replaced thereafter. He then asked the King for more men to combat the Iroquois Confederacy, who were in a constant guerrilla warfare with the Canadien settlements. With a coalition forming against France, no more troops could be spared for Canada. In 1688, hostilities between England and France resumed and the Iroquois were informed of this. Denonville proposed to assault New York by land and sea and requested to be recalled to France due to sickness. Frontenac was sent with an expedition that left La Rochelle but did not reach Québec until mid-October. In the meantime, Iroquois warriors struck the Canadien settlements near Montreal. Fifty-six farms were destroyed and more than a hundred Canadiens were killed or captured. Denonville had his regulars dispersed to towns across the land, attempting to protect the homes and families of the Canadien. Forts were abandoned. The Iroquois destroyed farmsteads and whole families were slaughtered or captured. On August 4, 1689, Lachine, a small town adjacent to Montreal, was burned to the ground. Fifteen hundred Iroquois warriors had been harassing Montreal defences for many months prior. Denonville's tenure was followed by the return of Frontenac, who replaced Denonville as governor for the next nine years (1689–1698). Frontenac had been arranging a new plan of attack to mitigate the effects of the Iroquois in North America and realized the true danger the imprisonment of the sachems created. He located the 13 surviving leaders, and they returned with him to New France in October 1698.
When Denonville had returned to France, the king continued to show his confidence in Jacques-René by appointing him a tutor to the children of the royal household.
Anniversary medal 
A medal commemorating the 250th anniversary of the 1687 Denonville Expedition was created by the Rochester Numismatic Association in 1937. The medal obverse has an image of the Marquis de Denonville while the medal reverse shows the timeline and path of the expedition.
- William J. Eccles, "Brisay de Denonville, Jacques-René de, Marquis de Denonville", Dictionary of Canadian Biography (Toronto: University of Toronto/Université Laval, 2000).
Joseph-Antoine de La Barre
|Governor General of New France
1685 – 1689
Louis de Buade de Frontenac