Career
Aco became Louisiana Salle"s lieutenant because of his knowledge of Native American languages and his abilities as an explorer. When the party reached the Illinois River. Aco, Hennepin and another man were sent to explore the upper Mississippi.
During their exploration they became the first Europeans to see Carver"s Cave and Saint Anthony Falls.
He was brought to the mouth of the Wisconsin River, and went on to explore the Wisconsin River, the Fox River down to Green Bay, Wisconsin, and Mackinac Island, Michigan, and finally, in 1681, to Montreal. After his exploring days were over, Aco settled in Illinois and became a trader.
