first met by Jesuits in Green Bay, WI belonged to Dakota or Sioux nation ceded land of Illinois to U.S., Sacs (Keokuk) ceded Illinois and moved to Iowa
Source: Past and Present of the City of Rockford and Winnebago County 977.33 C471p
location boiled maple sap east of Five Forks cabin
Rockordiana – Historic Houses and Landmarks – 1 & Rockford Morning Star 2/2/1899