Iroquois
1670–1701

Around 1670, the Iroquois drove the Siouan-speaking Mannahoac tribe out of the northern Virginia Piedmont region, and began to claim ownership of the territory. In 1672, they were defeated by a war party of Susquehannock, and the Iroquois appealed to the French Governor Frontenac for support:

It would be a shame for him to allow his children to be crushed, as they saw themselves to be... they not having the means of going to attack their fort, which was very strong, nor even of defending themselves if the others came to attack them in their villages.

Some old histories state that the Iroquois defeated the Susquehannock but this is undocumented and doubtful. In 1677, the Iroquois adopted the majority of the Iroquoian-speaking Susquehannock into their nation.

In January 1676, the Governor of New York colony, Edmund Andros, sent a letter to the chiefs of the Iroquois asking for their help in King Philip's War, as the English colonists in New England were having much difficulty fighting the Wampanoag led by Metacom. In exchange for precious guns from the English, an Iroquois war party devastated the Wampanoag in February 1676, destroying villages and food stores while taking many prisoners.

By 1677, the Iroquois formed an alliance with the English through an agreement known as the Covenant Chain. By 1680, the Iroquois Confederacy was in a strong position, having eliminated the Susquehannock and the Wampanoag, taken vast numbers of captives to augment their population, and secured an alliance with the English supplying guns and ammunition. Together the allies battled to a standstill the French and their allies the Hurons, traditional foes of the Confederacy. The Iroquois colonized the northern shore of Lake Ontario and sent raiding parties westward all the way to Illinois Country. The tribes of Illinois were eventually defeated, not by the Iroquois, but by the Potawatomi.

In 1679, the Susquehannock, with Iroquois help, attacked Maryland's Piscataway and Mattawoman allies. Peace was not reached until 1685. During the same period, French Jesuit missionaries were active in Iroquoia, which led to a voluntary mass relocation of many Haudenosaunee to the St. Lawrence valley at Kahnawake and Kanesatake near Montreal. It was the intention of the French to use the Catholic Haudenosaunee in the St. Lawrence valley as a buffer to keep the English-allied Haudenosaunee tribes, in what is now upstate New York, away from the center of the French fur trade in Montreal. The attempts of both the English and the French to make use of their Haudenosaunee allies were foiled, as the two groups of Haudenosaunee showed a "profound reluctance to kill one another". Following the move of the Catholic Iroquois to the St. Lawrence valley, historians commonly describe the Iroquois living outside of Montreal as the Canadian Iroquois, while those remaining in their historical heartland in modern upstate New York are described as the League Iroquois.

In 1684, the Governor General of New France, Joseph-Antoine Le Febvre de La Barre, decided to launch a punitive expedition against the Seneca, who were attacking French and Algonquian fur traders in the Mississippi river valley, and asked for the Catholic Haudenosaunee to contribute fighting men. La Barre's expedition ended in fiasco in September 1684 when influenza broke out among the French troupes de la Marine while the Canadian Iroquois warriors refused to fight, instead only engaging in battles of insults with the Seneca warriors. King Louis XIV of France was not amused when he heard of La Barre's failure, which led to his replacement with Jacques-René de Brisay, Marquis de Denonville (Governor General 1685–1689), who arrived in August with orders from the Sun King to crush the Haudenosaunee confederacy and uphold the honor of France even in the wilds of North America. In the same year, the Iroquois again invaded Virginia and Illinois territory and unsuccessfully attacked French outposts in the latter. Trying to reduce warfare in the Shenandoah Valley of Virginia, later that year the Virginia Colony agreed in a conference at Albany to recognize the Iroquois' right to use the North-South path, known as the Great Warpath, running east of the Blue Ridge, provided they did not intrude on the English settlements east of the Fall Line.

In 1687, the Marquis de Denonville set out for Fort Frontenac (modern Kingston, Ontario) with a well-organized force. In July 1687 Denonville took with him on his expedition a mixed force of troupes de la Marine, French-Canadian militiamen, and 353 Indian warriors from the Jesuit mission settlements, including 220 Haudenosaunee. They met under a flag of truce with 50 hereditary sachems from the Onondaga council fire, on the north shore of Lake Ontario in what is now southern Ontario. Denonville recaptured the fort for New France and seized, chained, and shipped the 50 Iroquois chiefs to Marseilles, France, to be used as galley slaves. Several of the Catholic Haudenosaunee were outraged at this treachery to a diplomatic party, which led to at least 100 of them to desert to the Seneca. Denonville justified enslaving the people he encountered, saying that as a "civilized European" he did not respect the customs of "savages" and would do as he liked with them. On August 13, 1687, an advance party of French soldiers walked into a Seneca ambush and were nearly killed to a man; however the Seneca fled when the main French force came up. The remaining Catholic Haudenosaunee warriors refused to pursue the retreating Seneca.

Denonville ravaged the land of the Seneca, landing a French armada at Irondequoit Bay, striking straight into the seat of Seneca power, and destroying many of its villages. Fleeing before the attack, the Seneca moved farther west, east and south down the Susquehanna River. Although great damage was done to their homeland, the Senecas' military might was not appreciably weakened. The Confederacy and the Seneca developed an alliance with the English who were settling in the east. The destruction of the Seneca land infuriated the members of the Iroquois Confederacy. On August 4, 1689, they retaliated by burning down Lachine, a small town adjacent to Montreal. Fifteen hundred Iroquois warriors had been harassing Montreal defenses for many months prior to that.

They finally exhausted and defeated Denonville and his forces. His tenure was followed by the return of Frontenac for the next nine years (1689–1698). Frontenac had arranged a new strategy to weaken the Iroquois. As an act of conciliation, he located the 13 surviving sachems of the 50 originally taken and returned with them to New France in October 1689. In 1690, Frontenac destroyed Schenectady, Kanienkeh, and in 1693 burned down three other Mohawk villages and took 300 prisoners.

In 1696, Frontenac decided to take the field against the Iroquois, despite being seventy-six years of age. He decided to target the Oneida and Onondaga, instead of the Mohawk who had been the favorite enemies of the French. On July 6, he left Lachine at the head of a considerable force and traveled to the capital of Onondaga, where he arrived a month later. With support from the French, the Algonquian nations drove the Iroquois out of the territories north of Lake Erie and west of present-day Cleveland, Ohio, regions which they had conquered during the Beaver Wars. In the meantime, the Iroquois had abandoned their villages. As pursuit was impracticable, the French army commenced its return march on August 10. Under Frontenac's leadership, the Canadian militia became increasingly adept at [guerrilla warfare, taking the war into Iroquois territory and attacking a number of English settlements. The Iroquois never threatened the French colony again.

During King William's War (North American part of the War of the Grand Alliance), the Iroquois were allied with the English. In July 1701, they concluded the " Nanfan Treaty ", deeding the English a large tract north of the Ohio River. The Iroquois claimed to have conquered this territory 80 years earlier. France did not recognize the treaty, as it had settlements in the territory at that time and the English had virtually none. Meanwhile, the Iroquois were negotiating peace with the French; together they signed the Great Peace of Montreal that same year.
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