Will Kellogg founder of the Kellogg Company Battle Creek - Born April 7, 1860 – Died October 6, 1951. He helped his brother John Harvey Kellogg run the Battle Creek Sanitarium. Together they pioneered the process of making flaked cereal. Because of the commercial potential of the discovery, Will wanted it kept a secret. John, however, allowed anyone in the sanitarium to observe the flaking process and one sanitarium guest, C. W. Post, copied the process to start his own company. This upset Kellogg to the extent that he left the sanitarium to create his own company. He died in Battle Creek, at 3:00pm on October 6 1951 by heart failure.