Le Grand Champ Bottom

Old Native American mound

The Mound Builders are the earliest Native American groups known to have inhabited the area. The Mound Builders cultivated corn and constructed large earthen mounds, particularly in the flood plains along the Mississippi River. The Mississippian culture was in decline by the 12th and 13th centuries, and had largely disappeared by the time of European contact.[3] At the time of European contact the most prominent Native American nation in the area were the Illiniwek who inhabited much of present-day Illinois and eastern Missouri. One particular Illiniwek tribe, the Kaskaskia Indians, originated from the area of present-day Peoria, Illinois, but had migrated south to the area of Kaskaskia, Illinois. In the late 1770s and 1780s, remnants of another Illiniwek tribe, the Peoria tribe, left the east bank of the Mississippi River to escape British and American oppression, with most settling in New Ste. Genevieve and around the Grand Champ Bottom. They were later followed by another Algonquian speaking tribe, the Kickapoos.[4][5]

Le Grand Champ served as the common field of Ste. Genevieve. It lies south of the community and extends to the River aux Vases in the bottoms along the Mississippi River. The original French name was "Le Grand Champ."

In Colonial French Ste. Genevieve each inhabitant was granted, in addition to his house lot, one or more lots in the common-fields that were set aside for cultivation. These lots were laid out in strips, generally one arpent wide (192 feet, 6 inches) and forty arpent long (roughly a mile), with long narrow plots perpendicular to the Mississippi River, and extended back to the foot of the bluffs. This manner of land distribution was common in medieval Europe, and became the private possession of the individual holder. The common-field was separated from the commons by a fence, which served to keep cattle and livestock from wandering into the fields. Each person owning a strip of land was required to maintain the section of the fence that crossed his land. As late as 1907 the "big field" of Ste. Genevieve was still being cultivated in this manner. The common field is not to be confused with the commons (French: la commune), which was an area set apart and used in common by all inhabitants of the village for the gathering of firewood and the pasturage of livestock.[2] Le Grand Champ not only fed Ste. Genevieve, but also provided a large part of the food for New Orleans, quickly becoming the breadbasket of the Louisiana.[6] A number of crops were cultivated in the field: corn, pumpkins, wheat, oats, barley, flax, cotton, and tobacco. Lacking steel implements, most of the farmers let their crops simply compete with weeds until harvest time.[7] A village of Peorias and Kickapoos lay on Le Grand Champ near old Ste. Genevieve, and their children played with French children.

However, relations with the Osage Indians to the southwest was not so peaceful. The Osage had no settlement near Ste. Genevieve, but they ranged widely to hunt wild game, as well as to steal livestock from the French. At night the Osage warriors would enter Ste. Genevieve, break into stables, steal livestock and take anything else they found of value. The Periorias and Kickapoos would go on hunts in the fall, spring and summer to supplement their crops, but they had to suspend their hunts for fear of the Osage. The French welcomed Shawnee and Delaware tribes from Ohio and Indiana to settle south of Le Grand Champ in present-day Perry County to serve as a buffer against the Osage. There, the Shawnee and Delaware established 6 settlements. However, the Shawnee and Delaware could do little to stop Osage raids. It was said that the Osage did not meet their match until American immigrants arrived, who regarded shooting Indians as being somewhat akin to squirrel hunting.[7][8]