William Wrigley Jr.
(September 30, 1861 - January 26, 1932)
William Wrigley Jr. started out as a traveling salesman at the age of 13, selling soap for his father's company. Later selling soap for another company, then selling baking powder with chewing gum as a premium. Customers liked the gum better than the baking powder, so he again switched products and began selling the chewing gum.
By the 1893 he was marketing his own brand of chewing gum, Lotta and Vassar, and then Juicy Fruit in 1893, and later that year Wrigley's Spearmint. His company, driven by his advertising genius, became one of the largest advertisers in the U.S., and the largest chewing gum manufacturer in the world.