Overview: They may have collaborated on the cornflake, but the Kellogg brothers could not have been less alike. One was an eccentric crusader for health, the other a shrewd businessman. John Harvey Kellogg and his younger brother Will Keith played out one of the most dramatic and bitter family feuds in American history, yet before their split, they were partners for 20 years. BIOGRAPHY® paints a detailed portrait of the Kellogg brothers, drawing on extensive original footage and commentary from family members and historians. Witness the feud that drove the brothers apart and watch Will Keith turn their humble invention into the cornerstone of one of the most successful companies in the world. From the first corn flake to their 10-year legal battle, THE KELLOGG BROTHERS: CORN FLAKE KINGS presents the tumultuous story of the men who revolutionized America's breakfast.