Oscar C. Koehler was the pivot point in a large family of brewers who, over the course of two generations, built up successful businesses in a portion of the Midwest that extended from St. Louis, Missouri, to Davenport, Iowa. In the St. Louis and Davenport metropolitan areas, the Koehlers achieved great social prestige and influence, both within the German-American community and in society as a whole. Their elite status and their ability to leverage capital eventually helped the Koehlers attain even greater business success.