Fort Chécagou, or Fort Chicago, was a purported seventeenth-century fort that may have been located in what is now northeastern Illinois. The name has become associated with a myth that the French continuously maintained a military garrison at a fort near the mouth of the Chicago River, and the future site of the city of Chicago on the southwestern shore of Lake Michigan.
Some sources mention that the fort was built in 1685, and that Henri de Tonti sent his aide, Pierre-Charles de Liette, as commander of the fort through 1702. Although this fort was marked on a number of eighteenth century maps of the area, there is no evidence that it ever existed at the described location, but may have instead actually been located at the mouth of the St. Joseph River, on the southeastern shore of Lake Michigan.
A number of small, temporary fortified trading posts were constructed in the area in the late seventeenth century. The exact location of most of these trading posts is uncertain, and, although they were sometimes referred to as "forts," there is no evidence of a permanent French military fortification in the area during this period.
In a letter written by the explorer La Salle dated June 4, 1683, he notes that two of his men had constructed a temporary stockade at the Chicago Portage in the winter of 1682. However, this structure was little more than a log cabin and was never garrisoned.
In the winter of 1685, the French had built another temporary stockade in the area, the purported Fort Chécagou. This fort was likely occupied for less than a year. In 1692, Henri de Tonti reportedly sent his aide, Pierre-Charles de Liette, to act as commander of the fort (through 1702). The earliest mention of a Fort of Chécagou located at the mouth of the Chicago River, appears in a memoir written by Henri de Tonti in 1693 in which he recounted an overland journey from Fort Michilimackinac to Fort St. Louis (also referred to as Fort Lewis which was located at today's Starved Rock State Park), that he made during the winter of 1685/1686:
"I embarked, therefore for the Illinois, on St. Andrew's Day [November 30], 1685; but being stopped by the ice, I was obliged to leave my canoe and to proceed on by land. After going 120 leagues (420 miles), I arrived at the Fort of Chécagou, where M. de la Durantaye commanded; and from thence I came to Fort St. Louis, where I arrived in the middle of January, 1686."
However, an account of the same journey written by Tonti in the summer of 1686, makes no mention of the fort, and can be interpreted to suggest that the fort he visited was actually at the mouth of the St. Joseph River on the southeast side of Lake Michigan. Further evidence that Durantaye's fort was not located beside the Chicago River comes from the journals of Henri Joutel. In October 1687 Joutel, and a party of La Salle's men left Fort St. Louis bound for Canada. When they arrived at Lake Michigan, however, poor weather prevented them from going any further. After waiting for eight days by the lake at the mouth of the Chicago River, they gave up and returned to Fort St. Louis. They set out again in March of 1688, arriving at Chécagou on March 29th, and leaving on April 8th. Joutel described their stay in the area, but made no mention of any fort.
The Mission of the Guardian Angel was built in 1696 by the French missionaries in order to facilitate the conversion to Christianity of the local indians.
In the early 1700s, the Potawatomis took over this region from the Mascoutens and the Miamis. The area (and any possible forts) was abandoned by the French in the 1720s during the Fox Wars. It was customary for the native peoples to burn down the Europeans' forts after their triumphs, unlike Europeans who would take over the fort and often rename it.
The first known foreigner to permanently settle in the area was Jean Baptiste Point du Sable, who was a Haitian of African and French ancestry. In the 1770s, he settled on the banks of the Chicago River, and married a Potawatomi woman.
This should have been the end of the question, but even today, scholars overly impressed by all the old maps are sometimes convinced that the remains of a French fort must lie somewhere along the Chicago River.
Compiled by Neil Gale, Ph.D.