Possibly one of the Gutler brothers
https://freepages.rootsweb.com/~onagakansas/genealogy/early_days.html
https://freepages.rootsweb.com/~onagakansas/genealogy/other_businesses.html

The Koetnz family was from Holland
https://freepages.rootsweb.com/~onagakansas/genealogy/pioneer_businessmen.html#koentz_john