Famous for founding the Kellogg Company, this Michigan-based entrepreneur established his cereal manufacturing business in 1906, originally calling it the Battle Creek Toasted Corn Flake Company.
He developed his method for creating cereal while employed at the Battle Creek Sanitarium in Michigan in the late 1800s.
Apart from his successful breakfast food business, Kellogg bred Arabian horses on a ranch in Southern California.
His brother, Will Keith Kellogg, was a prominent doctor and nutritionist. Between his two marriages -- to Ella Davis and Carrie Staines -- Will Kellogg had four sons and one daughter.
CW Post, a patient at the sanitarium where Will Kellogg's brother was the primary physician, used the Kellogg siblings' cereal flaking method as the basis for his own food company, Post Cereals (which later changed its name to General Foods).