Breakfast cereal he launched the Cornflakes brand, which overnight captured a national market. Soon there were forty rival manufacturers in the Battle Creek area. His brother William K. Kellogg (1860–1951) worked for him for many years until, in 1906, he broke away, bought the rights to Cornflakes, and set up the Kellogg Toasted Corn Flake Company. William Kellogg discarded the health food concept, opting for heavy advertising and commercial taste appeal. Later, his signature on every package became the company trademark. The second major innovator in the cereal industry was Charles W. Post, a salesman who was admitted to Kellogg's sanitarium as
Francis L. Kellogg Francis L. Kellogg Francis L. Kellogg (January 5, 1917 – April 6, 2006) was a diplomat, a special assistant to the Secretary of State during the Nixon and Ford Administrations and a prominent socialite in New York City. Francis Leonard Kellogg was born on January 5, 1917 in Manhattan, at 118 East 70th Street. He was the son of Frank Leonard Kellogg (1870-1941) and Emily Baker (1876-1952). His father was executive vice president of the Electric Storage Battery Company in Philadelphia. He was not related to the Kellogg cereal family. He was graduated from Choate School and Princeton University. He