Wikipedia
Senachwine
Senachwine ( Potawatomi: Znajjewan , "Difficult Current") or Petchaho (supposedly from Potawatomi: "Red Cedar") (c. 1744-1831) was a 19th-century Illinois River Potawatomi chieftain. In 1815, he succeeded his brother Gomo as chieftain of their band and was one of the last major Potawatomi chieftains to live in the region.
A number of places in Illinois are named in his honor including Senachwine Township in Putnam County, Illinois, Senachwine Creek, Senachwine Lake and the Lake Senachwine Reservoir.